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I have the HP Pavilion dv7t Quad Core series, ultra performance, and when i turn on my computer the screen is completely blank, and my caps/num lock LED lights are flashing every 4 to 5 seconds just once, my power adapter is plugged into the wall and my computer, my battery is completely inserted, i honestly have no idea what is going on, i tried the hard reset, removing charger, removing battery and holding power button for around 60 seconds, but that still didnt work, im so confused, and my computer isnt even a year old, didnt drop it,nothing was spilled on it, last thing i was doing was playing starcraft 2, which it can run just fine, logged off, shut my screen, came back few hours later, nothing, please help me, i wouldnt want 1700$ to be worth nothing

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  • aaronjgross Aug 05, 2010

    i have the HP Pavilion dv7t Quad Core series, ultra performance, and when i turn on my computer the screen is completely blank, and my caps/num lock LED lights are flashing every 4 to 5 seconds just once, my power adapter is plugged into the wall and my computer, my battery is completely inserted, i honestly have no idea what is going on, i tried the hard reset, removing charger, removing battery and holding power button for around 60 seconds, but that still didnt work, im so confused, and my computer isnt even a year old, didnt drop it,nothing was spilled on it, last thing i was doing was playing starcraft 2, which it can run just fine, logged off, shut my screen, came back few hours later, nothing, please help me, i wouldnt want 1700$ to be worth nothing

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Unfortunately, the 1 LED blink means a CPU problem. (A continuous blink would be insufficient power.) You will probably need to contact HP support if you want to have it fixed under warranty.

This can happen if the CPU got too hot. Sometimes this happens if the CPU cooler doesn't have a good coating of thermal compound between it and the CPU. (Unfortunately once it is fried, it's too late to remove the cooler and reapply thermal compound.) A new CPU is needed. If you want to save your data, remove the hard drive and put in in a 2.5" enclosure or a USB/SATA dock or USB/SATA/IDE dongle and attach to another computer. (Use the dongles carefully, you have to attach the power in the correct order to avoid damaging the hard drive. Read the online manual for your model before using.)

I wish that I could be of more help.

Cindy Wells

Posted on Aug 05, 2010

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If the hard reset did not work which it usually does, then double check your memory chips. Or try removing just one of them and try turning on the computer. If it still is the same, try the other chip.
If the problem still persists, you could have a defective board and I would use the warrant that it comes with. All electronics have a 1 year company warrant.

Posted on Aug 05, 2010

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1 Answer

How do i fix my LCD?


Hi,
I have got a hp pavilion dv5000, when I turn on it the screen goes blank.

Power led glows, I hear for a few time the fan, disk led flashes intermittently and also I feel that the DVD player tries to load.

If I try to click on caps lock or num lock, leds don't respond to commands. I tried the hard reset pressing the power button for 30 seconds with the battery and the power removed. Nothing to be done by connecting an external monitor....

What can I do ?qqb002.gif

Thank you

Jun 11, 2013 | HP Pavilion dv1000 Notebook

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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

I have a hp dv7t (brand new) and the num lock does not have an idicator light to tell if its on or off. HP tech says that is normal cause that model does not have that featrure. Do you if that is the...


Looks like the tech is right. HP now only gives you the option of seeing the num lock on or off by using the HP software on your computer.

see dgobes response in this forum:

http://forum.notebookreview.com/hp-pavilion-notebooks/562249-hp-dv6t-dv7t-select-edition-quad-edition-6xxx-series-owners-lounge-498.html

Please rate my review to show your appreciation!
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Jun 05, 2011 | HP dv7t Notebook

1 Answer

"HP Pavilion m7580" is not


Hello,

To verify whether it's a no POST issue, press NUM LOCK or CAPS LOCK key and check whether the CAPS LOCK or NUM LOCK lights are lit or changes when you press on it. If it doesn't then it's a No POST problem.

However, if the computer screen shows the HP logo or a display then it's POSTING and is experiencing a No BOOT issue.

If the NUM LOCK or CAPS LOCK responds when you press it but there is no display, check the connection between the monitor and the CHASSIS or CPU.

If you have verified that it's a No POST issue because CAPS lock is not responding, you need to open up the chassis to do a troubleshooting procedure. Be sure to unplug the chassis to all the connections especially the power cord. Drain the power by pressing and holding the power button from 8-10 seconds.

Here are the things that you need to do after you open up the chassis.
1. Reset the Memory sticks. Connect the CHassis to the power and monitor. If no go, try turning on the computer without the memory sticks. The aim of this troubleshooting is to see a display on the screen. Any display would be a good sign. If no go. Put the memory stick back in.

2. Remove the CD drive. Turn on the computer, check for development. If no go, proceed to step 3. Just leave the cd drive removed

3. Do the same thing with the other devices like the hard drive and other devices inside. Your aim is to see a display.

Let me know if what happens and I'll get back to you.

Once you see a display. Let me know by replying to this thread.

]

Apr 07, 2011 | HP Pavilion m7580n PC Desktop

4 Answers

Good day.. my compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only..thanks


Hello good day,sir
My compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only.I try ready so many time but everything are not meaning for me that's why i need your help,sir.please,give me some advice for power back.
Thank sir.

Feb 18, 2011 | HP Compaq 6735s Notebook

1 Answer

SCREEN WENT BLANK ON MY HP PAVILION LAPTOP. REBOOTED AT LAPTOP BOOTS UP FINE, BUT STILL HAS BLANK SCREEN. AUDIO WORKS, AND CAP LOCK AND NUM LOCK FLASH. dtcorman@comcast.net


HI,
Do a power drain, this may cause by an electrical charge in the motherboard itself,Im Not really sure how it affects the display of the computer but this method usually fix such problem like that, First, removed the battery then unplugged the AC adapter the press and hold the power button or the ON/OFF button for at least 30 seconds then connect the power supply back to your computer then turn it back on, if nothing happens,there is a possibility that the problem is with the LCD or monitor itself, maybe it will need a replacement...


Hope this will help...Your response is very much appreciated...

Jan 21, 2011 | Computers & Internet

1 Answer

Hello Experts, I have a HP Pavilion Tablet Laptop that won't boot. All keyboard lights and monitor lights (DVD controls) illuminate except the actual monitor, it does not come on and is completely...


Hello,

I'm having the exact same problem on my less than 2 yr old HP Touchsmart tx2675 laptop. Could you please let me know if you have solved the problem?

Thanks and Regards,
Manish

Nov 01, 2010 | Computers & Internet

1 Answer

Blank screen on laptop


Sorry to hear you are having problems. I have had this same issue before with this particular model. The following solution works 90% of the time.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.
Meaning of Sample Blink Codes for some EFI Notebooks Number of Blinks or Beeps Location of Blinking LEDs Component Being Checked Error Condition Continuous glow Battery power LED Battery The AC adapter is attached and the battery is charging, but does not yet have sufficient charge to power the notebook. 1 Caps Lock/Num Lock CPU CPU not functional 2 Caps Lock/Num Lock BIOS BIOS corruption failure 3 Caps Lock/Num Lock Memory Module error not functional 4 Caps Lock/Num Lock Graphics Graphics controller not functional 5 Caps Lock/Num Lock System board General system board failure 6 Caps Lock/Num Lock BIOS BIOS authentication failure Continuous blink AC power adapter LED Power adapter Insufficient power
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. Some HP Notebook PCs come with one stick of memory but have two memory slots. The problem could be that the stick of memory or one of the memory slots has a bad connection. The memory module compartment on most notebooks is located on the bottom of the case. The exact position varies by model. However, on some models, the memory compartment is under the keyboard. See your User Guide for the exact location of memory modules on your notebook.

Use the following steps to remove and reseat the memory modules: Step 1 - Remove the electrical power To remove all power from the computer and prevent accidental damage to the electronic components, do the following:
  1. Turn off the computer by pressing and holding down the Power button for about 30 seconds.
  2. Unplug the AC adaptor from the notebook.
  3. Slide and hold the battery release latch to the unlock position.
  4. Use your finger to lift the battery up and out.

  • Remove the memory module cover on the bottom of the notebook .Loosen the compartment's retention screws and lift up and remove the memory compartment cover. Remove the memory modules from the memory slots To prevent damage to the memory module, grasp the memory module by the side edges. Do not touch the metal contacts.
    1 - Pull the retention clips away from sides of the memory module
    2 - Gently pull the module out of the memory module slot
  • Reseat the memory module by holding module at a 45-degree angle, and pressing it firmly into the memory slot until it is seated.

    After reseating the memory module, replace the cover over the memory compartment before restarting the computer

    Hope this helps FiYa! If you find this solution helpful, please take a moment to leave us some feedback.

    Thank You!

    May 12, 2010 | HP Pavilion dv9000z Notebook

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