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AMD system randomly shutting off?

post #1 of 9
Thread Starter 
To start, here are my specs:

Asus (same in sig) Mobo
Phenom II 965 @ stock
12gb DDR3 memory
650watt PowerColor psu
Radeon HD 5450 (keep reading)


So, recently I sold my gtx 570 and bought a 7950. It came, was defective so I returned it for an RMA. I put an old 9800gt in there, so i can still play some source games and whatnot, while i wait for my new card. As I was on my computer, nothing intense, just literally writing something in notepad and listening to music, it shut off. No blue screen. Just off. I hit the power button again, and nothing happened. I flipped the on/off switch on my psu, tried again, but no cigar, but the little light on my mobo was on, so i was getting power. But, it would Still would not turn on. I completely unplugged it, waited a few seconds, plugged it back in, and it worked. It booted up, this time saying Overclock Has Failed (when I did overclock, this was normal if voltage was too low, but I was at stock settings, because of heat). I reset my bios to default, and booted into windows, to find windows could not see my 9800gt.

I had Windows Basic theme, with 800x600 resolution, and reinstalling nvidia drivers stated "no compatible hardware could he found"

I figured that card had bit the dust so I powered down to remove it.

Upon opening my case, the screw holding the card to the case, (the I/O) came loose, and I figured the card got a bad connection, shorted or something, and the mobo shut everything off to save other components.

So I can still have video output, I stuck my old 5450 HTPC card in there, which is literally just good enough for watching YouTube videos. And running Windows Areo at 1080p, and uses next to no power. It was running great for a few days, until today, the same exact power down scenario happened, this time, taking a 6 page paper hostage and killing it.

Any ideas what could be happening? When I had my 7950 in there for a week before I sent in an rma, it didn't do this. Never with my gtx 570...these a the only times its happened. My PSU should be more than adequate, and my motherboard VRM's are always cool. My system never locks up, it just, dies. And it cannot be a power outage, or a fuse being bad, the first time, it was plugged into my battery backup, that gives me almost an hour of playtime. Second time it was plugged directly into the wall.
post #2 of 9
Ether your PS or motherboard is killing your cards it seems.
650watt PowerColor psu should get replaced, get a good name brand PSU and be done with it.
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Red Dragon
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by DzillaXx View Post

Ether your PS or motherboard is killing your cards it seems.
650watt PowerColor psu should get replaced, get a good name brand PSU and be done with it.

Killing my cards? Yeah I don't think so...the cards still work, it just happened to do this after I removed and sold my 570.

I did think it was my PSU, so I guess that's my best bet, as I am getting a gigabyte 990fx UD7 mobo soon...nothing wrong with that ;D

I plan to Crossfire 7950's (2 way) in the future, and would like to NOT upgrade my psu again, can you reccomend me a good one? Im thinking about 850 watt?
post #4 of 9
Quote:
Originally Posted by HeDsh0t View Post

Quote:
Originally Posted by DzillaXx View Post

Ether your PS or motherboard is killing your cards it seems.
650watt PowerColor psu should get replaced, get a good name brand PSU and be done with it.

Killing my cards? Yeah I don't think so...the cards still work, it just happened to do this after I removed and sold my 570.

I did think it was my PSU, so I guess that's my best bet, as I am getting a gigabyte 990fx UD7 mobo soon...nothing wrong with that ;D

I plan to Crossfire 7950's (2 way) in the future, and would like to NOT upgrade my psu again, can you reccomend me a good one? Im thinking about 850 watt?

A good quality 750w would be perfect to be honest. I'd personally recommend the Seasonic X line, but that's just me personally. There's quite a few excellent units out there. But a good quality 750w will do you just fine with crossfired 7950's and I'm assuming an FX processor (I hope you're not using that Phenom II with two 7950's).
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Junkyard
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Crucial MX100 256GB WD Green 2TB DVDRW Corsair H50 Push / Pull 
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post #5 of 9
Quote:
Originally Posted by HeDsh0t View Post

Killing my cards? Yeah I don't think so...the cards still work, it just happened to do this after I removed and sold my 570.

I did think it was my PSU, so I guess that's my best bet, as I am getting a gigabyte 990fx UD7 mobo soon...nothing wrong with that ;D

I plan to Crossfire 7950's (2 way) in the future, and would like to NOT upgrade my psu again, can you reccomend me a good one? Im thinking about 850 watt?

Well when you said the 9800gt only started working at 800x600 even after drivers are installed after the power problem, the same thing my 8800gt did when it broke. Had to reflow it for it to start working again. Though it could just have been a glitch on your end and it might still work fine.

Seasonic or Corsair would be two great manufactures to get a PS from.
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Red Dragon
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3x 640 WD blacks Raid 0 Mushkin Enhanced Reactor 512GB SSD Sandisk 1TB SSD Samsung 470 Series 128GB SSD 
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post #6 of 9
If you do decide to get a new PSU, the best deal for a high-quality 750w model currently is the Rosewill Capstone-750. Its OEM is Super Flower, all its capacitors are from Nippon Chemi-con, and it's on the OCN Recommended PSU List.

Currently $80 shipped @ Newegg (use promo code RW20CPTE750).
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post #7 of 9
Sounds like a PSU circling the drain to me too. Could be your motherboard but I doubt it. The PC just shutting down like you've pulled the plug out makes the power supply the first suspect.
post #8 of 9
Thread Starter 
I
Quote:
Originally Posted by MacLeod View Post

Sounds like a PSU circling the drain to me too. Could be your motherboard but I doubt it. The PC just shutting down like you've pulled the plug out makes the power supply the first suspect.


It's weird though, because when it happens (hasn't happened again, and now I'm overclocked) my computer won't turn back on, although my motherboard light is on, which is in the board. I have to unplug it and replug it for it to turn on, then it tells me my overclocked failed, when I have been using the same overclock settings for a whole year.
post #9 of 9
I had a very similar problem,Except my rig would shut down completely under load sometimes,Randomly.No BSOD or anything,And it wouldn't turn back on until i moved the power switch from 115v to 230v and back again.I suspected it was my PSU,Many other members concured it was my PSU causing the issue.I would say your power supply is causing the issue. It's being overloaded and shutting off.Its the OCP kicking in.If you have the money,Buy a name brand quality PSU,Preferably 600W or more.Read all the reviews on PSU's on Newegg.
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