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PC wont turn on

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Wh0sJ0hnG4lt   05-05-2009 at 02:10:03 AM

I came home from school and turned on my PC. It ran for 10 minutes than suddenly went out. When I tried to turn it back on it seems spark, the blue LED lights flicker once and then it stops. The flicker seems to be located on a fan. Does this mean that fan is broken? Perhaps the Mobo maybe be broken? Or maybe the power supply or even one of the cables?

 

I have inspected the inside and can't find any problems. Any suggestions or ideas would be appreciated.

 

EDIT: The PC will still flicker the blue LED light once but then it will go out. Also, when i plug in the power cord, a sole green light on my mother board does light up. If this is so, does this mean that the power supply, mobo and power cord are fine? If yes, then that means my cpu is broken, right? please help.

 

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

 

Ist mein PC kaput?


Message edited by Wh0sJ0hnG4lt on 05-05-2009 at 11:03:05 PM
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r_manic   05-05-2009 at 05:42:53 AM
- 0 +

Have you tried the PC on another wall socket? You can also try another power cord.


Message edited by r_manic on 05-05-2009 at 05:43:49 AM
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daship   05-05-2009 at 05:41:45 PM
- 0 +

Power supply or a capacitor went boom.

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r_manic   05-06-2009 at 04:19:22 AM
- 0 +

Updates Wh0sJ0hnG4lt? Agree with daship that your power supply is probably kaput.

Reply to r_manic
smithereen   05-06-2009 at 07:07:10 AM
- 0 +

Not necessarily. There may be a ground or short somewhere, and the overdraw protection on your power supply may be kicking in. This has happened to me before.
The exact same problem happened to me. My power supply died completely, it didn't even power on for a few seconds, and when I replaced it with a new one, I had exactly your symptoms. It turned out that when the origional power supply died, it caused a power surge, durning which power arced from the motherboard into the standoff screws, leaving a burnt residue, allowing a short. So with the new PSU, when I powered the computer, it shorted out through the screws, and cut out. Removing the motherboard and cleaning off the reside revived the system, although it's now my backup.

Message quoted 2 times
Message edited by smithereen on 05-06-2009 at 07:09:52 AM
------------------------------ Phenom II X2 unlocked to four cores @ 3.8gHz,1.45V. 4GB DDR3-1600 Gigabyte 785g ATi Radeon HD4870 1GB
Run Folding@Home! Support Toms Hardware Guide, Team 40051!
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 Reply to smithereen
Wh0sJ0hnG4lt   05-06-2009 at 09:22:37 PM
- 0 +

smithereen wrote :

Not necessarily. There may be a ground or short somewhere, and the overdraw protection on your power supply may be kicking in. This has happened to me before.
The exact same problem happened to me. My power supply died completely, it didn't even power on for a few seconds, and when I replaced it with a new one, I had exactly your symptoms. It turned out that when the origional power supply died, it caused a power surge, durning which power arced from the motherboard into the standoff screws, leaving a burnt residue, allowing a short. So with the new PSU, when I powered the computer, it shorted out through the screws, and cut out. Removing the motherboard and cleaning off the reside revived the system, although it's now my backup.



Ok, I will take out my mobo and clean out any residue, and that should fix teh problem? Will I still need to buy a new power supply?

Reply to Wh0sJ0hnG4lt
Wh0sJ0hnG4lt   05-06-2009 at 10:44:56 PM
- 0 +

smithereen wrote :

Not necessarily. There may be a ground or short somewhere, and the overdraw protection on your power supply may be kicking in. This has happened to me before.
The exact same problem happened to me. My power supply died completely, it didn't even power on for a few seconds, and when I replaced it with a new one, I had exactly your symptoms. It turned out that when the origional power supply died, it caused a power surge, durning which power arced from the motherboard into the standoff screws, leaving a burnt residue, allowing a short. So with the new PSU, when I powered the computer, it shorted out through the screws, and cut out. Removing the motherboard and cleaning off the reside revived the system, although it's now my backup.



Also, can you be more specific on how I should clean my motherboard? What do I use to clean it without dmging it?

Reply to Wh0sJ0hnG4lt
smithereen   05-07-2009 at 12:50:57 AM
- 0 +

That won't necessarily "fix the problems", they could be any number of things. Breaking the seal between the motherboard, screws, and case should be sufficient, and if you don't see any scarring or residue, that's probably not the problem. If this doesn't help, follow the other people's suggestions. I would also follow these instructions to jump your PSU, and see if it shuts off immediately like when connected to the computer. If it doesn't, they you have a serious problem, let us know and we'll get back to you.

Message quoted 1 times
------------------------------ Phenom II X2 unlocked to four cores @ 3.8gHz,1.45V. 4GB DDR3-1600 Gigabyte 785g ATi Radeon HD4870 1GB
Run Folding@Home! Support Toms Hardware Guide, Team 40051!
CPU Buyer's Guide
 Reply to smithereen
Wh0sJ0hnG4lt   05-08-2009 at 03:15:52 AM
- 0 +

smithereen wrote :

That won't necessarily "fix the problems", they could be any number of things. Breaking the seal between the motherboard, screws, and case should be sufficient, and if you don't see any scarring or residue, that's probably not the problem. If this doesn't help, follow the other people's suggestions. I would also follow these instructions to jump your PSU, and see if it shuts off immediately like when connected to the computer. If it doesn't, they you have a serious problem, let us know and we'll get back to you.



I disassembled my PC and tried to find any "residue on the mobo and other components. Aside from some dust, I didnt find anything out of the ordinary so I just dusted everything with my PC still not working. I attempted to jump the PSU but other than that same sort of "spark" sound I hear when trying to turn my PC on the PSU didnt respond. Does this mean that it is broken?

Reply to Wh0sJ0hnG4lt
smithereen   05-08-2009 at 03:29:21 AM
- 0 +

Yes. You'll need a new power supply.

------------------------------ Phenom II X2 unlocked to four cores @ 3.8gHz,1.45V. 4GB DDR3-1600 Gigabyte 785g ATi Radeon HD4870 1GB
Run Folding@Home! Support Toms Hardware Guide, Team 40051!
CPU Buyer's Guide
 Reply to smithereen
Wh0sJ0hnG4lt   05-08-2009 at 03:45:33 AM
- 0 +

thanks everyone for helping me, I am glad that only the PSU is broken, as it is far better than needing to replace the whole computer.

Reply to Wh0sJ0hnG4lt
smithereen   05-08-2009 at 04:40:48 AM
- 0 +

Don't count on it yet. Power supplies can damage other components when they go.

------------------------------ Phenom II X2 unlocked to four cores @ 3.8gHz,1.45V. 4GB DDR3-1600 Gigabyte 785g ATi Radeon HD4870 1GB
Run Folding@Home! Support Toms Hardware Guide, Team 40051!
CPU Buyer's Guide
 Reply to smithereen
r_manic   05-11-2009 at 08:50:50 AM
- 0 +

Agreed Wh0... keep us updated please

Reply to r_manic
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