Very Unstable Computer

Jul 7, 2006
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Well this started off as just a few random reboots and it still doesn't interupt my daily use very much, but I decided to run some stability tests. Memtest 86 ran for 12 hours without an errors. Prime95, small fft's has run for almost 12 hours now without any errors. The Blend test somestimes locks my computer up within about 10 minutes, and large FFT's typcailly fail after about an hour and a half. Also sometimes when I start up 3dMark06, the system scanning tool at the beginning locks my entire computer up. I also got a IRQL Not less or Equal BSOD while running the Large FFT's test once.

I"ve tried messing with so much crap. I turned off cool and quiet. I've double and tripple checked my memory timings and voltages, and even tried relaxing my timings from 4-4-4-12 to 5-5-5-18. I know temperature isn't the issue. it barely peaks over 50 celsius under a full load. I have the Vcore set to 1.3 but every program is saying that it is actually running at 1.35, but I figure since the ideal range is 1.3-1.35 that should be fine anyways. I'm really at a loss here of what to do. I don't know if its a settings problem, a hardware problem, or what. My power supply seems more than adequate, I don't really think that is the problem either.

Can anyone please help me ?

Asus M2n-SLI Deluxe
amd 4200+ x2
Corsair 2 X 1024 XMS2 DDR2 800, CAS 4
Hiper 580 watt PSU
 

Atheus

Diamond Member
Jun 7, 2005
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I have not heard of 'Hiper' PSUs. Do you know who makes them? And what graphics card do you have? It may be drawing a lot of power...

Most likely a memory issue though. Try taking out one stick of RAM, then replace it and take out the other one. Test with only 1GB at a time in the system. Try the Prime95 blend test since that one fails quickest. Also try SuperPI 32M test - you will want to do a control run of this before taking out either of the RAM sticks to see if it's a good indicator.

If it's not RAM, try upping the CPU voltage a bit.

 

mountcarlmore

Member
Jun 8, 2005
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better than enermax is really pushing it... its a decent psu though, and probably not your problem. are you runing two instances of prime 95 by the way? that is a requirement if you have a dual core cpu, as prime95 is not multi-threaded. running two instances is easy, make two folders, call one prime1 and second prime2, and set the affinity using task manager, prime1 as core 0 and prime2 as core 1. getting that out of the way, i would think the problem is ram. did you set the command rate to 2t? that seems to be a problem with ddr2 ram and amds, they dont like 1t. also, run the windows memtest, memtest86 is too outdated and does not test current ram very well, plenty of occurences when it passes memtest and doesnt even boot into windows. the windows memtest however is very good, its actually considered by some to be more demanding than needed, kinda like prime by the way. also, did you install the dual core driver and the microsoft patch?
 
Jul 7, 2006
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yes i installed both driver and patch. My ram is set at 2t, which is what the ram is supposed to run at. I can run stresscpu forever without any errors, and I can also run prime05 small fft's forever without errors it appears. This makes me think the CPU is probably fine, is that a fair assumption? SuperPi fails a lot, and so does Prime95 in place fft's and the blend test.

I will run windows memtest now, thank you.

Also, can I mess with any of the other voltages for this motherboard, such as HT voltage, chipset voltage, etc. Superpi kept failing right away and I just boosted up the HT voltage a bit and so far its yet to fail, though I expect everything to fail at this point. My compuer has turned me into a nihlist.
 
Jul 7, 2006
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memtest spit out an error after about 5 minutes. I've been having the prime95 not passing issue with both sticks in individually, so I'm assuming memtest would also fail with each in individiually. Does this mean that both sticks are bad or that the motherboard is bad
 
Jul 7, 2006
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I just went to circuit city and picked up a 512mb DDR2 533mhz kingston ram stick. I'm trying this in my system now to see if I stilll have the same problems. If not I can be sure its the ram. Then its just a matter of the ram either being defective or not actually compatible :-/