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Help Needed PC Crashing

Last response: in Graphics & Displays
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August 12, 2012 9:11:49 PM

I'll jump straight to the point, my computer crashes when I play games for a certain period of time, an example would be Half Life 2 on medium settings will crash after about 2 hours or less and I think it may have to do with the temperature of the PC. I've tried many solutions including Replacing the heatsink on the CPU, backdating drivers on my GPU, cleaning and re-applying thermal paste onto my CPU moving the computer to a more ventilated area, having the lid off and a powerful fan blowing onto the motherboard and upgrapding the PSU, making the GPU Fan run at highest speed possible and to always run for best performance.

If I were to leave the PC idle on my desktop the temp of the GPU will sit at around 30-35C, after running WoW on Medium-High settings the GPU temp will rise to about 50C and can go much higher and Ive checked the core temps using the SIW program and when the GPU was at 50C Core 1 was at 89C, after about 2-4 hours it will crash and the likelyness that it will crash increases if I am multi tasking on the PC (Gaming and Browsing)

The way the PC crashes is just an immediate shutdown as it the plug was turned off at the wall.

Computer Specs
AMD FX 4100 3.60 Ghz CPU
Windows 7 Ultimate 32bit (Upgrading to Win 8 64bit in a few days) will this make a huge difference?
8gb Corsair DDR3 RAM
Arctic 13 Freezer Heatsink
Asus GT 440 1gb DDR5 Gfx Card
I believe the motherboard is an Asus M5A78L.

any help would be greatly appreciated thanks.

More about : needed crashing

a c 291 U Graphics card
August 13, 2012 12:24:58 AM

So your CPU is overheating. I'd suggest reseating heatsink and reapplying thermal paste.
August 13, 2012 9:19:11 AM

I did this about 3 days ago and the problem still happens, ive reverted back to the stock cooler to see if that will help as I think the quality of the cooler I was using was not that good.
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a c 291 U Graphics card
August 13, 2012 11:17:13 AM

What thermal paste did you use? What did you use to clean old paste?
August 13, 2012 11:24:45 AM

I used Akasa55 TIM and also an Akasa brand of TIM remover.
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