PC won't power on after new vid card install

[gellar]

Hey all,

Bought a new 8800GT and tossed it in the rig, but now I can't even get the thing to turn on.  All signs point to a power problem since pressing the on button does fuck all right now.  Any thoughts other than my 1 year old PS just blew up at the exact moment I put in a new vid card?

gellar

[pingwrx]

sounds like the ps is bad.

[gellar]

sounds like the ps is bad.

Yeah a bit random... but I guess that's the most logical conclusion.  Off to get a new one then.

gellar

[gellar]

Or not... I just jumped the PS using these instructions and it does turn on:

http://www.overclock.net/faqs/96712-how-jump-start-power-supply-psu.html

gellar

[gellar]

OK... the board has power.  I just realized there's an LED labeled SB_PWR and it's lit up.  I just can't get the damn thing to turn on.  MB gone poof maybe?

gellar

[Goldchamp]

Make sure the video card is seated right? I do feel your pain, My pc has been giving me shit for weeks now

[Goldchamp]

Also your Power supply might still be working, but if it doesn't have the power for your new video card, that could still be your problem. Did you try with old video card?

[gellar]

Doesn't fire with either card.

Of note is that when I do manage to fire the PS up (using the method above), it only stays on for about 60 seconds before shutting off... I'm not sure if that's normal, however.

gellar

[Goldchamp]

Wow I thought i was the only one who could go to change one thing and end up changing half the components. Thanks gellar, misery loves company! On that note, I would say I would check and make sure the plug from power supply to MB didn't get jarred lose maybe? Running out of possibilities.

[gellar]

Yeah I've reseated all power cables like 5 times... I'm leaning towards 'gellar fucked the motherboard.'

gellar

[Goldchamp]

LOL, yeah a new Motherboard will probably fix the problem. Just remember to do a clean install. And upgrade! Always a good excuse to upgrade. Like you need one that is.

[gellar]

Yeah well... I can just head out to Best Buy and snag a PS to see if it fixes the issue.  Worth a try anyway; I can always return it.

Off I go.

gellar

[gellar]

Looks like it was the power supply... reassembling now.

gellar

[Calvin]

 

[TheAtomicKid]

Possibly related. When you change out parts on the pc, always be sure and unplug the psu from the wall... cause even when the pc is 'off', there's still standby power running, at the very least once you've turned the psu on, for the first time. That's how you can do cool things like those front panel buttons to turn on your pc, etc.

Found this out the semi hard way, when working on a mac at one point. Well, actually, a friend was working on it. Got it all back together, and it wouldnt turn on. He'd been working on the thing with it plugged in, and apparently there's a built in micro circuit breaker on the motherboard that got tripped when he started adding/removing bits.

Not sure if you did or didnt unplug, you didnt mention... but thought I'd bring this up as food for thought.

Atomic

[gellar]

Yeah definitely unplugged... dunno if the PS dying was related to the new card or just a very odd coincidence.  Hopefully I can get it RMA'd.

Loving the 8800GT though.

gellar

[javahead]

Doesn't fire with either card.

Of note is that when I do manage to fire the PS up (using the method above), it only stays on for about 60 seconds before shutting off... I'm not sure if that's normal, however.

gellar

No, this is not normal. Glad that was all that was wrong.

[Laner]

I don't think I saw this mentioned... some video cards require their own molex power connector, and the PC won't boot if it doesn't have it.  Could that be the case here?

[gellar]

I don't think I saw this mentioned... some video cards require their own molex power connector, and the PC won't boot if it doesn't have it.  Could that be the case here?

Wasn't the case, but a good point.

gellar