Question about HP Pavilion 754n PC Desktop

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My 754n will not turn on

When i push the power button the light blinks and the fan starts to spin but it turns back off.. 1 second

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Make sure that the power wolts is as per required.
and try connecting to different wall outlet and also check the CPU fan. if it is firmly fixed.

Posted on Jan 19, 2009

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Gateway gt4016 wont turn on you can hear the fan and light flicks on for a second but then nothing changed the power supply nothing


try rebooting your coumpter is in sleep mode it takes a long time but you will get it back on .... keep pushing the power button aventally it will start up

Jun 30, 2012 | Gateway GT4016 Desktop PC

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CANDY CLD 135-86S will not boot, blinking lights two


More than likely you have a memory or video card issue.

Whenyou plug in the power cord is there any lights whatsoever on the computer?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the computerand why it is not booting. Most times it's a motherboard issue when youhear beeps or blinking lights continuous. Most times the problem is withthe memory or Video Card. Count the Blinking Lights or Beeps and take note oftheir pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button. Maybeyou have a Static Charge Buildup. Remove the Power Cord, then Press andHold the power button for 30 seconds. After 30 seconds plug the powercord back in and hit the power button to see if it boots. Maybeyour memory is bad or the memory slot is bad.Removethe Power Cord, Open the Case and remove one of the memory chips. Set thechip aside then try rebooting the computer. If it boots, then you knowthe memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and tryrebooting. If it fails take the chip out and set it aside, then put theother chip in and try booting it in both slots. If it boots, just toverify that the chip set aside is bad, mark an x on it and put it into the openmemory chip slot and try booting.Maybeyour power supply is bad. Sometimes there is enough power to make thepower light or some other lights come on but not enough power to make the fanturn on or hard drive spin.

Jun 09, 2012 | Computers & Internet

1 Answer

When cpu turn on power supply goes off pls. tell me solution........


Maybe your power supply is bad and needs to be replaced. I've seen them have enough power to make the lights turn on, but not enough power to start the fans or hard drive to spinning.

Do you hear thefan come on? Do you hear the hard drive spinning? If not your power supply might be bad.

When you plug in the power cord is there any lights whatsoever on the laptop, where the plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the laptop and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button. And if that's true maybe you was operating off the battery the last time you had it on and since the power cord is bad, it was not charging the battery so the battery is drained and the power cord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove the Battery, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in (leave the battery out) and hit the power button to see if it boots. If it does, you can put the battery back in and let it charge.


Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

May 23, 2012 | Compaq Computers & Internet

1 Answer

Lx6810 blinking power light


Whenyou plug in the power cord is there any lights whatsoever on the laptop, wherethe plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous. Most times the problemis with the memory or Video Card. Count the Blinking Lights or Beeps and takenote of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button.

Maybe you have a Static Charge Buildup. Remove the Power Cord, then Pressand Hold the power button for 30 seconds. After 30 seconds plug the powercord back in and hit the power button to see if it boots. Maybeyour memory is bad or the memory slot is bad.Removethe Power Cord, Open the Case and remove one of the memory chips. Set thechip aside then try rebooting the computer. If it boots, then you knowthe memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and tryrebooting. If it fails take the chip out and set it aside, then put theother chip in and try booting it in both slots. If it boots, just toverify that the chip set aside is bad, mark an x on it and put it into the openmemory chip slot and try booting.
Maybe your power supply is bad. Sometimes there is enough power to make the power light come on but not enough power to make the fan turn on or hard drive spin.

May 10, 2012 | Gateway LX6810-01 PC Desktop

1 Answer

I turn on my tower and the fans move and the disk try clicks like it wants to spin then i turn the monitor on and it turns green them orange right away and says entering power save mode waht do i do


1) Unplug the computer from power.

2) Press the Power On button in, and hold it in for a count of 10 seconds.
(Count)

Let go of the Power On button.
Do this same procedure two more times. (Or until the Power On LED does not light up anymore)

3) Plug the computer into power. WAIT 1 minute, turn the computer on.

The fans should spin at high speed for a few seconds, then settle down.
Let's see if the computer boots.

Post back in a Comment, and we will go from there.

Regards,
joecoolvette

Feb 26, 2012 | Gateway 702GE PC Desktop

1 Answer

Push power button and the power light turns amber and lights up then shuts off. the light in back of the computer is light green and it starts to turn on then dies


The fact that ity is trying to start and shuts off after ..it seams that it is the CPU fan to blame ...If the fan fails to start the CPU will turn the computer down instantly due to the temperature limit ..(in 1 or 2 sec ) ..
so ...open it up ..and see if the fan is spinning ...on start ..and if it is not ...check the connection with the board or replace it ..
(by the way ..this may also be a CPU failure ..and need another one ) ..

Aug 31, 2011 | Dell Inspiron 518 Desktop Computer

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

Dell XPS400 No Start!!


If you fan isn't turning like it should, it is definitely a power supply issue. Go out and purchase a power supply with 250-300 watts...thats a good standard wattage!!

May 12, 2009 | Dell XPS 200 PC Desktop

2 Answers

No output on Monitor


Hello, It depends on how you cleaned the computer. If you removed the card from the slot then it may not be reseated back into proper alignment. If it is onboard video then there may still be a bit of dirt across one of the chip contacts. The other option would be when you plugged the monitor cable back in, you may have accidently bent a pin on the plug. Make sure that all power to the computer is off for several minutes before disconecting the cable and then look at the cable end to see if one of the pins got bent. Carefully straighten it with fine needle nose pliers then carefully plug it back in. If this doesn't work then you may have created static electricity and blew out the video system. Hope this helps, RAC

Apr 13, 2009 | AMD (90613) PC Desktop

1 Answer

Power light blinking yellow after sitting a while


Unplug computer, disconnect all usb/monitor/internet, open it, hold power button until green led on the inside on the motherboard turns off, pop out the BIOS battery (looks like a big watch battery and use a small flathead screwdriver to depress the spring lock on one side), plug in computer, hold power button for about 20 seconds (must reset BIOS or something), let up on power button, wait 10 seconds and push power button. The computer should turn on. Wait for it until activity seems stable (1 min. or so). Push powerbutton to shut off.

If this has worked you have proven that it's not the power supply (it turned on).

Go buy a new battery (CR2032 3 volt). Unplug computer, open it, hold power button until green led on the inside on the motherboard turns off, pop in new battery, plug in (you should notice the power button blinking amber again), hold power button until it stops blinking (about 20 sec....again must reset BIOS or something), wait 10 sec., push power button. the computer should turn on. Wait for it until activity seems stabe (1 min. or so). Push powerbutton to shut off.

Now, close case, plug in all usb/monitor/internet/etc. Power up computer. You'll get an internal floppy drive error. Push F2 (maybe F1) to get into the BIOS settings and go to "drives" and turn off the internal floppy. Save and exit. The computer should boot properly now.

This seems to be a big problem with the e510, my theory is that this one small battery is the root of most of these failures (as these computers usually fail after 1-2 years), not the power supply or the motherboard (heck, when you replace the motherboard it comes with a new one of these batteries...a several hundred dollar piece of hardware, with a $5 battery that will actually fix it).

Oct 11, 2008 | Dell XPS 200 PC Desktop

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