PC Turns off Instantly. Help! -_-

All sorts. / All sorts.
January 1, 2009 at 16:03:34
Specs: Windows Vista, 8 GB

I come back from vacation, and the hard drive with my OS on it is dead. This is fine. I also have a 500GB drive with music and such on it. They're all Seagate. I buy a refurbished hard drive off of newegg, and am able to install Vista 64 bit on it. Great! I remove all the jumpers which apparently had been limiting me to SATA I. So they're both SATAII.
Later on (maybe an hour later) after everything is back in the unit, I press the power button. The fans start up for a second, then nothing. The only light on is the one saying "MEM PWR" and the one that indicates power going to the motherboard. I try putting the jumper back on. That doesn't work. I try replacing the power chords and SATA chords going to the motherboard. Nope. I try removing the new 750 GB hard drive. It works! It works with the 500 GB drive plugged in.

So, I think its the new hard drive. I print out the warantee stuff and head off to my local electronics store to pick up another hard drive while I wait.

I plug in my new 1TB Seagate 7200 rpm, and same thing!! It 'feels' like some sort of electrical short. I can hear a tiny click, but that could just be everything powering down.

Please help. I'm having trouble finding anything about this online. I've checked my wiring and such. Everything seems okay.

I have 8GB of RAM (G-Skill).
1000 Watt Power Supply.
Two Geforce 9800 GX2 graphics cards.
Nvidia 780iSLI board.

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January 1, 2009 at 16:08:03
"1000 Watt Power Supply"

Make/model & amperage specs?

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January 1, 2009 at 18:10:29
Antec TruePower Quattro TPQ-1000 1000W ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail


There you go :)


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January 1, 2009 at 18:37:11
With all those +12v rails, it's very important to balance the load. Make sure you don't have too many devices drawing off of just one or two of them while the others are basically laying idle.

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Related Solutions

January 1, 2009 at 19:01:07
It's actually doing it with any hard drive I plug in... even when there's just one of them. It's just turning on and shutting off. Works fine with no hard drives plugged in.

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January 6, 2009 at 14:50:32
I'm still having this issue. Any ideas?

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