My PC hang up during Nvidia nTune Performance Stability Test

My PC
Intel Core 2 Duo E6850 3.0GHz
Asus P5K3 Deluxe Wi-fi
1GB DDR3 Memory
Nvidia Geforce 8800GT 512MB
250GB Sata HDD
Corsair HX 620W PSU
Windows Vista Ultimate
Coolermaster Cosmos Case with 4 fans already installed on it
Thermalright Ultra 120 Extreme CPU Cooler

I check temprature so idle temprature is about 18-19C and load about 31-32C.

Whenever I try to run performance stability test from ntune, after couple of seconds, my PC suddenly hang up, and after few seconds my monitor screen goes black.

I try the same test before on my old Pentium D 3.0GHZ, Abit SG-95 Motherboard using same PSU and Same GPU and that time also it hang up. I had Win XP Pro that time.

So guyz, what is the main problem? Is this PSU or something else?

Thanks in advance,
dhirenkanojiaAsked:
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Bozwell99Commented:
I would expect that PSU to easily be up to the job of powering those components, unless you have some reason to think it might have failed.
You don't mention which Nvidia driver version you are using, but I would recommend upgrading to the latest driver. If already on latest driver, try and older version from the Nvidia website.
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mcclellanfsuCommented:
First off, why are you running nTune? Have you had problems, or are you running it "just because"? nTune has been known to have some problems so it may just be nTune that is causing it to hang.

Try running these free stability testing programs to see if you get the same "hanging" results.

CPU Killer which can be found: http://www.cpukiller.com/download.html
Memtest which can be found at: http://www.majorgeeks.com/download.php?det=350
Prime95, which can be found at: http://www.majorgeeks.com/download.php?det=4363
OCCT which can be found at: http://www.ocbase.com/perestroika_en/
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dhirenkanojiaAuthor Commented:
Hi, thank you for your replies guyz.

Bozwell, I am using forceware version 169.25 for vista 32 bit which is latest on their website.

Mcclellanfsu, I am just running ntune for no reason, just wanted to check my PC's stability. Anyway, I will run the programs which you have mentioned and will reply you.

Thank you once again.
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dhirenkanojiaAuthor Commented:
Hi, I check my system using Prime95 Torture Test yesterday for 30 mins. and it has passed all tests without any error.

Thank you once again guyz.
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texanmikeCommented:
Just a thought.  I'm assuming, based on the hardware you described, that you are overclocking.  Prime95 is a great benchmark for your computer but 30 mins isn't really long enough to see if its running. Let it run for several hours (12 or more) and check for errors.  

Not trying to find a problem where there isn't one, just a thought.  If there are errors reduce your processor multiplier and run it again as memory is often a problem.

Mike
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