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Author Topic: PC won't power on after new vid card install  (Read 1595 times)
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gellar
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« on: November 11, 2007, 05:02:41 PM »

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
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pingwrx
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« Reply #1 on: November 11, 2007, 05:15:56 PM »

sounds like the ps is bad.
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gellar
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« Reply #2 on: November 11, 2007, 05:48:55 PM »

Quote from: pingwrx on November 11, 2007, 05:15:56 PM

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
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gellar
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« Reply #3 on: November 11, 2007, 06:10:42 PM »

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

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gellar
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« Reply #4 on: November 11, 2007, 06:21:36 PM »

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
« Last Edit: November 11, 2007, 06:27:05 PM by gellar » Logged
Goldchamp
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« Reply #5 on: November 11, 2007, 06:22:51 PM »

Make sure the video card is seated right? I do feel your pain, My pc has been giving me shit for weeks now
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Goldchamp
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« Reply #6 on: November 11, 2007, 06:24:53 PM »

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?
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gellar
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« Reply #7 on: November 11, 2007, 06:27:48 PM »

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
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Goldchamp
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« Reply #8 on: November 11, 2007, 06:32:30 PM »

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! smile 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.
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gellar
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« Reply #9 on: November 11, 2007, 06:35:03 PM »

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

gellar
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Goldchamp
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« Reply #10 on: November 11, 2007, 06:36:48 PM »

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. smile Like you need one that is.
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gellar
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« Reply #11 on: November 11, 2007, 06:38:46 PM »

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.

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gellar
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« Reply #12 on: November 11, 2007, 08:26:02 PM »

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

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Calvin
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« Reply #13 on: November 11, 2007, 08:29:14 PM »

 thumbsup
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TheAtomicKid
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« Reply #14 on: November 12, 2007, 05:17:15 AM »

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
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gellar
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« Reply #15 on: November 12, 2007, 05:29:55 AM »

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
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javahead
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« Reply #16 on: November 12, 2007, 03:29:53 PM »

Quote from: gellar on November 11, 2007, 06:27:48 PM

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.
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« Reply #17 on: November 12, 2007, 03:40:25 PM »

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?
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gellar
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« Reply #18 on: November 12, 2007, 05:39:32 PM »

Quote from: Laner on November 12, 2007, 03:40:25 PM

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
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