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unexpected computer shutdown... ?

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Old 11-03-03, 08:38 AM Thread Starter   #1
cjh23
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Unhappy unexpected computer shutdown... ?


Please help,
My computer just turns off unexpectedly from time to time. Mostly when playing games but it has occured whilst messing around in windows.
I originally thought it was a heat problem, but all my motherboard temp sensors are below 40 and i have an external temperature sensors around the cpu and graphics card, which are also below 40.
I recently changed my graphics card thinking this might be the problem, but it hasnt helped.

What could it be?

Current system - Abit NF7-S motherboard, Athlon 2600+, 512 Mb DDR RAM, 40Gb HD, Windows XP, Currently an old Nvidia TNT2 16Mb gaphics card.

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Old 11-03-03, 08:57 AM   #2
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What are you running for an overclock? what kind of memory are you running?

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Old 11-03-03, 09:34 AM   #3
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Welcome to the forums.

First things you can suspect are heat, your PSU, or your memory. Do you have a generic PSU? Quality memory?

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Old 11-03-03, 11:29 AM   #4
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Turn off the auto restart on failure option. That'll freeze the PC on the BSOD and maybe give you a clue to your problem.
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Old 11-03-03, 11:42 AM   #5
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its the psu. im sure. ive seen it a hundered time or more now.

pc shuts off, no warning - no fans, no nothing excpet the mobo light.

Try another psu - something with at least 18amps on the 12v rail.

I had this exact problem. I was running a q-tec 400w psu. ive also seen 4 other people running q-tecs on these board with the same problem, and every one of them cured it with a better psu.

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Old 11-03-03, 03:09 PM Thread Starter   #6
cjh23
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thats really spooky...


It just so happens i have a Q-tec 400 W PSU. Perhaps id better change it.
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Old 11-03-03, 03:14 PM Thread Starter   #7
cjh23
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otherwise, memory i have, 2 sticks of 256Mb 168DIMM PC266Mhz, i think.

I must admit i find all this messing around with computers quite a challenge. Its amazing how one tiny little thing can really throw a spanner in the works...

Is it alway like this?

Cheers for the advice.
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Old 11-03-03, 05:53 PM   #8
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Sounds like the psu...

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Old 11-04-03, 05:07 PM   #9
james.miller
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Quote:
Originally posted by cjh23
thats really spooky...


It just so happens i have a Q-tec 400 W PSU. Perhaps id better change it.
now how did i know it would be a q-tec?

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Pioneer bd204 bluray sata drive | Corsair HX620w PSU | BFG GeForce 8800GTX | Silverstone SST-LC17b
| 22" dell e228wfp | 40" 1080p SONY 40w2000

ONKYO TX-SR805 | bi-amped mission m71i fronts | eltax center & bipolar rears
2x 12" custom built subwoofers powered by a denon pma-100m | PS3 with linux and a 250gb 3.5" internal drive | Nintendo wii


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Old 11-04-03, 09:33 PM   #10
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Right after I installed my NF7_S My comp was having some problems including random shutdown. First thing I did to fix it was RMA the memory, no luck. Set the FSB deathly slow, no luck. Reinstalled EVERY driver one by one, no luck. Tried out like 6 different BIOS, no luck. Then I RMA'd my NF7, voila! All my problems were solved. There was no physical damage at all to the board, but there was something very wrong with it. My problems were described to me as probably being a prolem with my PSU, so don't give in to their arguments too easily.
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Old 11-05-03, 05:58 AM Thread Starter   #11
cjh23
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sorry to seem really thick, but what does RMA'd mean...?
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