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Help! PC won't boot

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - Help! PC won't boot

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maichu   09-13-2008 at 07:15:04 AM

Hi There:

So my mom's pc decided the other night it was going to stop booting. I pulled the case apart thinking it was the PSU. The case/cpu fans come on for about a second then shut off. I decided to start unplugging drives etc to try and narrow things down, no luck. Finally I unplugged the 4pin ATX cable (black/yellow cable with 4 pins that goes to the mb). The fans stayed running when this was disconnected, but nothing would boot.

Anyone have any idea what could be wrong based on this info?

Thanks
maichu

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will_chellam   09-13-2008 at 11:32:45 AM
- 0 +

I had somthing similar a while back, try unplugging it from the power for about ten mins, and in the meantime resetting the bios.

turned out with my computer it was stuck in a suspend state, when you pressed the power it tried to wake up and went straight back to sleep.

Just a thought before you start doing expensive things like buying hardware.... If its not the above problem, PSU or MB sound most likely.

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bobbknight   09-13-2008 at 12:32:38 PM
- 0 +

When someone says they pulled the 4pin CPU power plug and the board stayed on I think of the CPU electrical circuit.
Look very carefully around the CPU for burned components.
You might have a bad CPU, but it can be the motherboard or the PSU.
Like will said start with a bios reset if you find no burned parts. Also use your nose, and see if you smell anything like a burn smell coming from the PSU.

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invisik   09-13-2008 at 12:46:37 PM
- 0 +

resent cmos see if that helps. it sounds like a psu. do u have a spare u can try out?

------------------------------ intel core 2 quad q6600 @3.2ghz msi p6n diamond (X-FI Extreme sound) 6gig of OCZ+CoRSAIR oc 900mhz Nvidia gtx 260 sli @ 730/1465/1250
Lite-On Blue-ray Western Digital 7200rpm 500gb Antec 500 Earthwatt Window vista 64-bit
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maichu   09-13-2008 at 05:49:45 PM
- 0 +

Thanks for the advice guys...going to buy a PSU today and try and swap and see if it fixes the issue. I'll keep u guys updated :)

Reply to maichu
maichu   09-14-2008 at 05:12:11 AM
- 0 +

ok so I went to put the new PSU in...pc seemed to stay running so i powered it down to bring it over to test on a monitor. When I plugged it back in and turned it on, PSU wouldn't start up.

I'm thinking faulty PSU brand new outta the box?

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