Question about HP Compaq d530 SFF PC Desktop

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POWER when i connect the ac and power the computer the LED on the system board keeps blinking preventing the system from booting.and fans dont run.what do i do please.tommy

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  • mikey in MA Aug 06, 2008

    I got the same problem. Later, I tried again, the fan came up but the system won't boot. Nothing on screen. Please help. Thanks.



    Mikey

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  • 8 Answers

If it is 4 beeps and blinking LEDs then it might be the power suppy is bad. That is what mine did. You could unplug the old power supply and try a new, ATX power supply to see if it will boot. I ended up changing to a ATX tower.

Posted on Aug 19, 2008

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  • 395 Answers

Remove ram memory - it should beep when you switch it on - if no beep then check CPU in socket and cpu fan spinning when on.

Posted on Aug 08, 2008

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Power led light is a steady orange but pc will not power up


If the power light is blinking amber, the computer is receiving electrical
power, a device might be malfunctioning or incorrectly installed.
- Remove and then reinstall the memory modules (see "Memory" on
page 112).
- Remove and then reinstall any cards (see "Cards" on page 116).
- Remove and then reinstall the graphics card, if applicable (see "Cards"
on page 116).
• If the power light is steady amber, there may be a power problem or an
internal device malfunction.
- Ensure that all power cables are securely connected to the system
board (see "System Board Components" on page 107).
- Ensure that the main power cable and front panel cable are securely
connected to the system board (see "System Board Components"
Copy and paste this link to your internet browser for your computer's manual.
ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_inspiron_desktop/inspiron-531s_owner%27s%20manual_en-us.pdf
You can also go to support.dell.com

Jan 08, 2013 | Dell Dimension 4600 PC Desktop

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Laptop LED Blink on Startup There are many reasons that a computer does not...


Laptop LED Blink on Startup
There are many reasons that a computer does not startup or boot into the Windows operating system. If your computer will not start or boot, you will see or hear symptom to indicate the general area of the problem.
Startup Symptom: LEDs blink but does not start
The blinking LED lights on newer computers, or the beep tones on older computers, will help support agent determine what hardware component is not responding properly. The exact meaning of each code varies with the model, and the user cannot change any of the blink or beep codes.
DO THESE FIRST - Perform a hard reset.
If a PC suddenly fails to boot properly, you should perform a hard reset as the first procedure.
1. Disconnect all peripheral devices and remove all USB devices and media cards. You want to test the computer not the accessories!
2. Disconnect the AC power adapter, remove the battery and then press and hold the power button for at least 15 seconds.
3. Reconnect the AC power adapter (but do not connect the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a disk drive and fan turning.
Identify the number of blinks or beeps
When there is a start-up problem and you see LED lights on the keyboard blink a few times (between 1 and 8 blinks) do the following actions.
Table of Sample Blink Codes
The following table illustrates the meaning of blink codes used on some notebooks. The blink or beep codes on your computer may have different meanings.
Meaning of Sample Blink Codes for some EFI Notebooks:
1) Number of Blink: Continuous Glow, Blinking LED: Battery power LED, Component: Battery,
Error Condition: The AC adapter is attached and the battery is charging, but does not yet have sufficient charge to power the notebook.
2) Number of Blink: 1, Blinking LED: Caps Lock/Num Lock, Component: CPU,
Error Condition: CPU not functional
3) Number of Blink: 2, Blinking LED: Caps Lock/Num Lock, Component: BIOS,
Error Condition: BIOS corruption failure
4) Number of Blink: 3, Blinking LED: Caps Lock/Num Lock, Component: Memory,
Error Condition: Module error not functional
5) Number of Blink: 4, Blinking LED: Caps Lock/Num Lock, Component: Graphics,
Error Condition: Graphics controller not functional.
6) Number of Blink: 5, Blinking LED: Caps Lock/Num Lock, Component: system board,
Error Condition: General system board failure.
7) Number of Blink: 6, Blinking LED: Caps Lock/Num Lock, Component: BIOS,
Error Condition: BIOS authentication failure.
8) Number of Blink: Continuous blink, Blinking LED: AC power adapter LED, Component: Power adapter,
Error Condition: Insufficient power
Common solutions for issues that cause blinking LEDs or beep tones
When the computer can boot into the BIOS, run the memory test to identify other issues.
Check for loose connections and test the memory
Blink codes are often displayed after a user adds memory to the computer but does not seat the module properly. The LEDs may also blink error codes if a hardware component is loose because the computer was dropped or jarred. The problem could be that the stick of memory or one of the memory slots has a bad connection.
Check for loose memory modules
If a memory module is loose or is not making good contact with the memory slots, the computer does not recognize all of the memory. Reseating the memory module may resolve memory failure errors.

on Mar 21, 2011 | Computers & Internet

2 Answers

My laptop screen is black and caps lock and scroll key are flashing


That is a security configuration on HP Laptops, depending on the way they blink is the problem your machine has.

Here is the web page where this info is posted, in case you need more info, hope this helps you to determain.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&lc=en&dlc=en&cc=uk&lang=en&rule=26781&product=3816592
This document pertains to HP Notebook PCs with the HP Unified Extensible Firmware Interface (UEFI) beginning in late-2008. On startup, you may see a blank screen. If the diagnostic utilities detect a specific problem with hardware components, the fan turns on, but the screen remains blank. To help identify the cause of the problem, various LED lights on the keyboard blink a series of codes. The diagnostic utilities use the LEDs near the Num Lock or Caps Lock keys to blink a series of error codes. At the end of the series the blinking stops. The pattern of blinks will occur any time you attempt to start the computer until the error is resolved. Battery power LED blinks The Battery power LED indicates the condition of the power supply. When starting the computer, or when the computer is in operation, use the chart to identify the power condition. Battery Power LED Component Tested Error Condition Battery power LED off, and Caps Lock/Num Lock off Battery or AC Adapter AC adapter not connected or failure

Battery low charge or failure Battery power LED blinking Battery Insufficient charge on the battery When new computer is used for first time, the white LED light for the AC power connector blinks. Battery is still in "Shipping Mode", the light continues to blink even when AC power is connected.

To resolve, turn off notebook, connect AC power and allow battery to charge for at least 30 minutes, then start computer. LEDs near Caps Lock and Number Lock keys blink when starting notebook The LED lights near the Caps Lock and Num Lock keys will blink if an error is detected during the start up process. The LEDs will blink a number of times in a sequence and then stop. The number of blinks in the sequence indicates what component caused an error when it was being tested during start up. If the LEDs stop blinking and the computer does not start, you can press the power button again to repeat the tests. Count the number of blinks, and use the chart to identify the error condition. Knowing the number of blinks is helpful when you contact an HP support agent for technical help. Caps Lock/Num Lock LED Component Tested Error Condition LEDs blink 1 time CPU CPU not functional LEDs blink 2 times BIOS BIOS corruption failure LEDs blink 3 times Memory Module error not functional LEDs blink 4 times Graphics Graphics controller not functional LEDs blink 5 times System board General system board failure LEDs blink 6 times BIOS BIOS authentication failure

Dec 01, 2011 | HP Computers & Internet

1 Answer

My computer is not working....i am stuck in windows system32 drivers disk.sys when i try the safe mode...and the installation stops and just turn into black... can anyone help me ragarding this problem?...


If computer does not start normally, use this checklist to identify specific symptoms and take the recommended corrective actions to resolve the problems.Perform a Hard Reset Do these actions first to clear all temporary setting before troubleshooting the problem.Disconnect all peripheral devices and remove all USB devices and media cards Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain residual charge
  1. Reconnect the AC power adapter (do not connect the battery), press the Power button and look for the LEDs to blink or glow, and listen for the sound of a disk drive and fan turning.
Perform each recommended corrective action and then attempt to restart the computer.Symptom 1: LED lights do not glow, display is black, no fan or drive sounds are heard, and computer does not startIf LEDs do not glow or blink when AC power adapter is attached and power button is pressed, there is no power available to the notebook.
  • Check AC adapter wiring and power connection to the notebook.
  • Connect a different AC power adapter and remove battery, then restart notebook.
  • Connect a different battery and disconnect AC power adapter, then restart notebook.
  • If there is no power available at the notebook, contact HP to purchase a replacement battery or AC adapter.
Symptom 2: LEDs blink or computer beeps but does not start Blinking LEDs or beep tones indicate a hardware failure during the pre-start up testing.
  • Count number of blinking LEDs or beeping tones to help with diagnostics testing.
  • Contact HP for technical assistance. There are no other user-initiated troubleshooting actions until error codes are resolved.
Symptom 3: LEDs glow, fan noise may be heard briefly, display remains black, and computer fails to startup or boot Usually occurs if a component is installed incorrectly, or there is a device conflict or failure.
  • Connect an external monitor to check if the problem is the built-in LCD display or graphics card.
  • Remove all CD/DVDs, SD cards, USB devices, peripherals and do a Hard Reset .
  • If memory or hard drive components were replaced, reinstall original components.
  • Remove memory modules and replace one-at-a-time.
  • Remove and reseat hard drive.
  • If possible, turn on power, press F10 to enter BIOS mode, and run Memory Test and Hard Drive Test .
  • On newer notebooks, turn on power, press Esc to enter UEFI mode, and run Memory Test and Hard Drive Test .
  • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Repair Computer option, or enter Safe Mode and run Memory Diagnostics .
  • If all other methods fail , but computer can boot to BIOS, use recovery disk to recover the computer to original condition.
    Note: All programs and data are destroyed during recovery.
Symptom 4: Computer may display an error message on a black screen during startup or boot
  • Search www.microsoft.com for terms in error message.
  • Search www.hp.com for terms in error message.
  • If possible, turn on power, press F10 to enter BIOS mode, do the corrective actions listed under Symptom 3 to run memory and hard drive tests.
Symptom 5: Computer displays a blue screen or continually re-starts After an error message is displayed, you can usually bypass the error and continue to run the notebook in Safe mode to install an updated BIOS or driver.
  • Search www.microsoft.com for terms in error message.
  • Search www.hp.com for terms in error message.
  • If possible, turn on power, press F10 to enter BIOS mode, and run diagnostic Memory test and Hard Drive test .
  • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and do one or more of the following:
    • Select Disable automatic restart on system failure to view error message.
    • Run Repair Your Computer .
    • Run Last Known Good Configuration .
    • Select Boot into Safe Mode and then select Run a Microsoft system restore .
    • Select Boot into Safe Mode and then select Uninstall recently installed programs .
    • Select Boot into Safe Mode and then run Windows Update .
Symptom 6: Computer displays the Windows logo screen and stops respondingIf no error message displays, turn on power, press F8 to enter Windows Advanced boot options ,and select Disable auto-restart to view error message.
  • Search www.microsoft.com for terms in error message.
  • Search www.hp.com for terms in error message.
  • If possible, turn on power, press F10 to enter BIOS mode, and select Restore the BIOS defaults (F9) .
  • If possible, turn on power, press F10 to enter BIOS mode, and run Hard Drive Test .
  • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Last Known Good Configuration (Advanced) . .
  • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Boot into Safe Mode and then Uninstall recently installed programs .
Update Computer After Resolving A Problem When the computer starts into Windows normally, you should install the latest updates and patches to prevent other start-up problems.

Oct 11, 2011 | Computers & Internet

1 Answer

What will i do to my hp mini notebook it has a power but it cannot booth


Perform a Hard Reset Do these actions first to clear all temporary setting before troubleshooting the problem.Disconnect all peripheral devices and remove all USB devices and media cards.Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain residual charge.Reconnect the AC power adapter (do not connect the battery), press the Power button and look for the LEDs to blink or glow, and listen for the sound of a disk drive and fan turning.Perform each recommended corrective action and then attempt to restart the computer.Symptom 1: LED lights do not glow, display is black, no fan or drive sounds are heard, and computer does not startIf LEDs do not glow or blink when AC power adapter is attached and power button is pressed, there is no power available to the notebook Check AC adapter wiring and power connection to the notebook Connect a different AC power adapter and remove battery, then restart notebook.Connect a different battery and disconnect AC power adapter, then restart notebook Symptom 2: LEDs blink or computer beeps but does not start Blinking LEDs or beep tones indicate a hardware failure during the pre-start up testing Count number of blinking LEDs or beeping tones to help with diagnostics testing Symptom 3: LEDs glow, fan noise may be heard briefly, display remains black, and computer fails to startup or boot Usually occurs if a component is installed incorrectly, or there is a device conflict or failure Connect an external monitor to check if the problem is the built-in LCD display or graphics card Remove all CD/DVDs, SD cards, USB devices, peripherals and do a Hard Reset If memory or hard drive components were replaced, reinstall original component Remove memory modules and replace one-at-a-time Remove and reseat hard drive If possible, turn on power, press F10 to enter BIOS mode, and run Memory Test and Hard Drive Test On newer notebooks, turn on power, press Esc to enter UEFI mode, and run Memory Test and Hard Drive Test If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Repair Computer option, or enter Safe Mode and run Memory Diagnostics If all other methods fail , but computer can boot to BIOS, use recovery disk to recover the computer to original condition Symptom 4: Computer may display an error message on a black screen during startup or boot Search www.microsoft.com for terms in error message Search www.hp.com for terms in error message
  • If possible, turn on power, press F10 to enter BIOS mode, do the corrective actions listed under Symptom 3 to run memory and hard drive tests.
  • Symptom 5: Computer displays a blue screen or continually re-starts After an error message is displayed, you can usually bypass the error and continue to run the notebook in Safe mode to install an updated BIOS or driver.
    • Search www.microsoft.com for terms in error message.
    • Search www.hp.com for terms in error message.
    • If possible, turn on power, press F10 to enter BIOS mode, and run diagnostic Memory test and Hard Drive test .
    • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and do one or more of the following:
      • Select Disable automatic restart on system failure to view error message.
      • Run Repair Your Computer .
      • Run Last Known Good Configuration .
      • Select Boot into Safe Mode and then select Run a Microsoft system restore .
      • Select Boot into Safe Mode and then select Uninstall recently installed programs .
      • Select Boot into Safe Mode and then run Windows Update .
    Symptom 6: Computer displays the Windows logo screen and stops responding If no error message displays, turn on power, press F8 to enter Windows Advanced boot options ,and select Disable auto-restart to view error message.
    • Search www.microsoft.com for terms in error message.
    • Search www.hp.com for terms in error message.
    • If possible, turn on power, press F10 to enter BIOS mode, and select Restore the BIOS defaults (F9) .
    • If possible, turn on power, press F10 to enter BIOS mode, and run Hard Drive Test .
    • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Last Known Good Configuration (Advanced) . .
    • If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Boot into Safe Mode and then Uninstall recently installed programs .
    Update Computer After Resolving A Problem When the computer starts into Windows normally, you should install the latest updates and patches to prevent other start-up problems.

    Oct 09, 2011 | HP Mini 1000 Netbook

    1 Answer

    Hi all, TECRA M10 Model No. PTMB3A000N004 Laptop was on standby and was left open all night. Next morning, no response and would not 'wake'. Laptop was plugged in on charge. Hard rebooted...


    take a look:

    Power Status Check
    The following LEDs indicate the power supply status:
    q Battery LED
    q DC IN LED
    The power supply controller displays the power supply status through the Battery and the DC IN LEDs as listed in the tables below.
    Table 2-1 Battery LED
    Battery LED Power supply status
    Lights orange Quick charge.
    Lights green Battery is fully charged and AC adapter is connected
    Blinks orange (even intervals) The battery level becomes low while operating the computer on battery power.*1
    Flashes orange The power switch is pressed on when the battery level is low.*2
    Doesn't light Any condition other than those above.*1 Low Battery Hibernation will be executed soon.
    *2 Low Battery Hibernation has already been executed.

    Table 2-2 DC IN LED
    DC IN LED Power supply status
    Lights green DC power is being supplied from the AC adapter.
    Blinks orange Power supply malfunction*3
    Doesn't light Any condition other than those above.
    *3
    When the power supply controller detects a malfunction, the DC IN LED blinks and an error code is displayed.

    -------------------

    Error Code Check
    If the power supply microprocessor detects a malfunction, the DC IN LED blinks orange. The blink pattern indicates an error as shown below.
    q
    Start
    Off for 2 seconds
    q
    Error code (8 bit)


    "1"
    On for one second

    "0"
    On for a half second

    Interval between data bits
    Off for a half second

    The error code begins with the least significant digit.
    Example: Error code 12h (Error codes are given in hexadecimal format.)

    Convert the DC IN LED blink pattern into the hexadecimal error code and compare it to the tables below.

    q DC IN
    Error code
    Meaning
    10h
    AC Adaptor output voltage is more than 16.5 V.
    12h
    Current from the DC power supply is more than the limit (6.05 A).
    13h
    Current from the DC power supply is more than the limit (0.5 A) when there is no load.
    14h
    Current sensing IC is not normal.

    q Main Battery
    Error code
    Meaning
    21h
    Main battery charge current is more than 6.05 A.
    22h
    Main battery discharge current is more than 0.5 A when there is no load.
    23h
    Main battery charge current is more than 3.1A when DC IN direct charge is off.
    24h
    Current sensing IC is not normal.
    25h
    Main battery charge current is more than 0.3A when the battery isn't being charged.

    q S3V output
    Error code
    Meaning
    40h
    S3V voltage is not more than 3.14V when the computer is powered on or off.
    45h
    S3V voltage is not more than 3.14V when the computer is supports CV and is booting up.

    q C5V output
    Error code
    Meaning
    50h
    C5V voltage is more than 6.00 V when the computer is powered on or off.
    51h
    C5V voltage is not more than 4.50 V when the computer is powered on.
    52h
    C5V voltage is not more than 4.50 V when the computer is booting up.
    53h
    C5V voltage is not normal when the computer is suspended.
    54h
    C5V voltage is not normal when the computer supports CV and is suspended.
    55h
    C5V voltage is not more than 4.50V when the computer supports CV and is booting up.

    q C3V output
    Error code
    Meaning
    60h
    C3V voltage is more than 3.96 V.
    61h
    C3V voltage is not more than 2.81 V when the computer is powered on.
    62h
    C3V voltage is not more than 2.81 V when the computer is booting up.
    63h
    C3V voltage is not normal when the computer is suspended.
    64h
    C3V voltage is not normal when the computer supports CV and is shut down.
    65h
    C3V voltage is not more than 2.81V when the computer supports CV and is booting up.

    q PPV output (PCU core voltage)
    Error code
    Meaning
    70h
    PPV voltage is more than 1.56V when the computer is powered on or off.
    71h
    PPV voltage is not more than 0.68V when the computer is powered on.
    72h
    PPV voltage is not more than 0.68V when the computer is booting up.
    73h
    PPV voltage is not less than 0.68V when the computer is powered off.

    q BGVSNS output
    Error code
    Meaning
    80h
    BGVSNS voltage is not more than 1.62V when the computer is on or off.
    81h
    BGVSNS voltage is not more than 1.02V when the computer is powered on.
    82h
    BGVSNS voltage is not more than 1.02V when the computer is booting up.
    83h
    BGVSNS voltage is not less than 1.02V when the computer is powered off.
    84h
    BGVSNS voltage is not more than 1.62V when the computer is suspended.

    q 1R5-E1V output
    Error code
    Meaning
    90h
    1R5-E1V voltage is more than 1.80V when the computer is powered on or off.
    91h
    1R5-E1V voltage is not more than 1.275V when the computer is powered on.
    92h
    1R5-E1V voltage is not more than 1.275V when the computer is booting up.
    93h
    1R5-E1V voltage is not less than 1.275V when the computer is powered off.
    94h
    1R5-E1V voltage is not more than 1.275V when the computer is suspended.

    q 1R8-E1V output
    Error code
    Meaning
    A0h
    1R8-E1V voltage is more than 2.16V when the computer is powered on or off.
    A1h
    1R8-E1V voltage is not more than 1.53V when the computer is powered on.
    A2h
    1R8-E1V voltage is not more than 1.53V when the computer is booting up.
    A3h
    1R8-E1V voltage is not less than 1.53V when the computer is powered off.
    A4h
    1R8-E1V voltage is not more than 1.53V when the computer is suspended.

    q 2R5-SNS output
    Error code
    Meaning
    B0h
    2R5-SNS voltage is more than 3.00V when the computer is powered on or off.
    B1h
    2R5-SNS voltage is not more than 2.125V when the computer is powered on.
    B2h
    2R5-SNS voltage is not more than 2.125V when the computer is booting up.
    B3h
    2R5-SNS voltage is not less than 2.125V when the computer is powered off.
    B4h
    2R5-SNS voltage is not more than 2.125V when the computer is suspended.

    q 1R25-E1V output
    Error code
    Meaning
    C0h
    1R25-E1V voltage is more than 1.50V when the computer is powered on or off.
    C1h
    1R25-E1V voltage is not more than 1.063V when the computer is powered on.
    C2h
    1R25-E1V voltage is not more than 1.063V when the computer is booting up.
    C3h
    1R25-E1V voltage is not less than 1.063V when the computer is powered off.
    C4h
    1R25-E1V voltage is not more than 1.063V when the computer is suspended.

    q 2R5-E1V output
    Error code
    Meaning
    D0h
    2R5-E1V voltage is more than 3.00V when the computer is powered on or off.
    D1h
    2R5-E1V voltage is not more than 2.125V when the computer is powered on.
    D2h
    2R5-E1V voltage is not more than 2.125V when the computer is booting up.
    D3h
    2R5-E1V voltage is not less than 2.125V when the computer is powered off.
    D4h
    2R5-E1V voltage is not more than 2.125V when the computer is suspended.

    ---------------------
    In the case of error code 10h or 12h:

    Make sure the AC adaptor cord and AC power cord are firmly plugged into the DC IN 15 V socket and wall outlet. If the cables are connected correctly, connect a new AC adaptor and/or AC power cord, if necessary.

    In the case of error code 2Xh:

    Make sure the battery pack is correctly installed in the computer. If the battery pack is correctly installed, replace the battery pack with a new one.

    If the error still exists, the system board or the battery board may be disconnected or damaged. Disassemble the computer and check the connection between the AC adaptor and the system board and connection between the system board and the battery board (if there is one, in my case it was integrated to ths system board).

    After checking the connection, perform the following:
    Check 1
    Replace the AC adaptor with a new one. If the AC adaptor is still not functioning properly, perform Check 2.
    Check 2
    Use a multimeter to make sure that the F8800 fuse on the System board is not blown. If the fuse is not blown, go to Check 3. If the fuse is blown, go to Check 6.
    Check 3
    Use a multimeter to make sure that the F1000 fuse on the Battery board is not blown. If the fuse is not blown, go to Check 4. If the fuse is blown, replace the Battery board with a new one following the instructions in Chapter 4.
    Check 4
    Make sure that the Battery board cables are firmly connected to PJ8820 and PJ8821 on the System board and to PJ1000 and PJ1001 on the battery board. If they are connected firmly, go to Check 5.
    Check 5
    The Battery board or System board may be damaged. Replace it with a new one following the instructions in Chapter 4.


    I hope this helps many people with the troubleshooting. Details may vary as models vary, but most if it is the same for every Toshiba

    Mar 03, 2017 | Toshiba Tecra M10 Notebook

    1 Answer

    3 beep sound


    If a PC suddenly fails to boot properly, you should perform a hard reset as the first action. Performing the hard reset will correct many problems. If the computer still does not start properly, select your symptom from the list below to guide you to the recommended corrective actions.
    1. Disconnect all peripheral devices and remove all USB devices and SD media cards. You want to test the computer not the accessories!
    2. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain all residual power and restore default startup settings.
    3. Reconnect the AC power adapter (but do not insert the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a fan or other moving parts turning.
    4. If the computer does not start, the LED lights do not glow, and the display is black, you can perform one or more of the following actions to resolve the no power issue.
      • Verify the computer is receiving power from the AC adapter . Verify that the AC adapter is not damaged and is connected correctly to a working wall outlet plug. Verify AC power is connected to the system board by examining the AC adapter, wiring, and pin connection for damage. The keyboard LEDs will glow when AC power is connected to the system board. Damaged components, like the AC adapter or the pin in the power connector, may require an HP-certified repair.
      • Use a different AC power adapter . If you have access to a different AC adapter or power pack that is designed for the computer, connect it to the notebook and try to start the computer. If you own or have access to more than one notebook, verify that you are using the adapter which belongs to the notebook. CAUTION: Using a power adapter that does not meet the power requirements or has the wrong type of connector may damage the computer. On newer notebook models, connecting the wrong adapter to the notebook may cause the power LED lights to blink but not power the computer.
      • Remove the battery and boot on AC power only . A discharged or defective battery may prevent the AC adapter from supplying enough power to start the computer. To verify that power from the AC adapter is available for PC; remove the battery, connect AC power adapter, and press power button. If available, try using a different AC adapter, that is rated for the PC, and repeat this test.
      • Remove the AC adapter and boot on battery power only . A defective AC adapter may not charge the battery and prevent the computer from booting on battery power only. To verify battery power available for the PC; connect AC power adapter, allow battery to charge for 30 minutes or more, disconnect the power adapter and press power button. If available, try using a fully charged battery, of the same type, from another computer and repeat this test.
        • If LEDS do not glow and the fan or hard drive do not spin, battery may need to be replaced.
        • If tests of both the battery and the AC adapter fail, there may be a problem with system board requiring service by HP.
        • If LEDs glow and PC boots, the AC adapter may need to be replaced.
        • If LEDs glow, but PC does not boot go to LEDs glow, fan is heard, but display is black or blank section.

    Nov 21, 2010 | HP Compaq d530c PC Desktop

    1 Answer

    My d530 minitower powers off unexpectedly and red lights starts to blink on System's LED//


    Hi Kindly let me know how many times the red light blinks
    Condition Code Service Actions Processor thermal protection activated. Power LED blinks red twice, once a second, followed by a two second pause.
    1. Make sure the computer air vents are not blocked and that the cooling fan is running.
    2. Open the hood, press the power button, and see if the processor fan spins. If the fan is not spinning, make sure the fan cable is plugged into the cable header on the system board, and that the fan is properly installed and seated.
    3. If the fan is plugged in and seated properly, but is still not spinning, replace the processor fan.
    4. Reseat the processor heatsink and make sure the fan assembly is attached to the heatsink properly.
    Processor is not installed. Power LED blinks red three times, once a second, followed by a two second pause.
    NOTE: This condition indicates a missing or improperly installed processor, not a defective one.

    Make sure there is a processor in the system. Reseat the processor and verify that it is installed properly. Power failure (power supply is overloaded) Power LED blinks red four times, once a second, followed by a two second pause.
    1. Check the voltage selector, located on the rear of the power supply, is set to the correct voltage (the correct setting depends on the region).
    2. Open the hood and make sure the 4-wire power supply cable is fully connected to the power connector on the system board.
    3. Check if a device is causing the problem by removing all attached devices (such as disk drives and expansion cards), then power on the system. If the system enters POST, power off and replace one device at a time, repeating the procedure until the system power failure reoccurs. Replace the device that caused the failure, then replace each of the other devices and confirm that they are functioning properly.
    4. If you cannot isolate the failure to a specific device in the previous step, replace the power supply. **
    5. Replace the system board.*
    Pre-video memory error. Power LED blinks red five times, once a second, followed by a two second pause, and five simultaneous beeps are sounded
    1. Reseat the DIMMs in the memory slots on the system board, then power on the system.
    2. Replace the DIMMs one at a time to isolate the faulty module.
    3. Replace 3rd-party memory with HP memory.
    4. Replace the system board.*
    Pre-video graphics error. Power LED blinks red six times, once every second, followed by a two second pause, and six simultaneous beeps are sounded. For systems with a graphic card:

    1. Reseat the graphics card and then power on the system.
    2. Replace the graphics card.
    3. Replace the system board.*


    For systems with integrated (on-board) graphics, replace the system board. PCA (system board) failure. ROM detected failure prior to video. Power LED blinks red seven times, once a second, followed by a two second pause, and seven simultaneous beeps are sounded. Replace the system board. Invalid ROM based on bad checksum Power LED blinks red eight times, once a second, followed by a two second pause, and eight simultaneous beeps are sounded.
    1. Reflash the ROM using a ROMPaq diskette.
    2. Replace the system board.*
    System does not power on. No beeps or blinks since the system is not functioning. Press and hold the power button for less than four seconds. Perform the following steps depending on whether the hard drive LED turns green.

    If the hard drive LED turns green, then:

    1. Make sure the voltage selector (which is located on the back of the power supply) is set to the correct voltage for your region.
    2. Remove the expansion cards one at a time until the 3.3V auxiliary light on the system board turns on. If removing a card turns the light on, replace the card and then see if the system works.
    3. Replace the system board.*


    If the hard drive LED does not turn green, then:

    1. Make sure the computer is plugged into a functioning AC power outlet.
    2. Open the hood and make sure the power button is securely fastened in the power harness and that the harness is connected properly to the power connector on the system board. In other words, make sure that the power button is making contact with the power circuit.
    3. Make sure the power supply cables are connected properly to the power connectors on the system board.
    4. Check to see if the 3.3V auxiliary light on the system board is not turned on, replace the power supply. **
    5. Replace the system board.*

    Dec 29, 2009 | HP Compaq d530 Convertible Minitower PC...

    1 Answer

    Powers On if I plug it in, and power supply fan runs...


    Think of blinking amber as the initial state of the LED. As long as the system is receiving power from a power source and can pass that power through the system board to the LED on the Control Panel it should, at least, blink amber. As a result, a blinking amber Power Button LED is a reliable indicator that the system is receiving power from a power source. This, in turn, tells us that the source and power cord are likely to be functional. The Blinking Amber LED also tells us that the power supply to system board connection is good as well as the connections between the system board, I/O Panel and Control Panel. Depending on the components installed and the condition of those components, the LED may progress past blinking amber and move to solid amber. If the LED does not progress past blinking amber it indicates that the system is not able to properly distribute power to the system components. This is discussed in the next section of the interaction.


    It does not indicate that the power supply is bad. It simply indicates that, for whatever reason, one of the power supply 'rails' is not operating within its specified range or, simply, that there is a short somewhere in the system.
    The LED state could be the result of a misconfigured or incorrectly installed system component. A bad drive, for example, may be shorting out one of the rails. Incorrectly installed memory can cause a blinking amber front panel power button LED.

    Feb 05, 2009 | Dell PowerEdge 1800 Server

    1 Answer

    New Computer Wont Boot!


    when you say "the fan makes a noise like its getting ready to spin", which fan...power supply's or cpu? if you answer power supply, then the POWER OK signal is not returning to power supply and it then quickly shuts down to prevent further damage. double check a firm connection to mother board. If you answer CPU, then it becomes far more complicated. Try re-seating the memory chips.

    Jun 05, 2007 | Systemax Venture PC Desktop

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