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computer locks up during games, no mouse, no keyboard

Sometimes when I am playing games, my computer locks up and the only recourse is to hold down the power button until it turns off. Usually an intermittent screeching is coming from the speakers. The last image remains, immobile, on the screen.

It seems to happen more often on Steam games than others, but that may just be because I have played them more in recent months.

I have checked CPU and GPU temperatures and they are OK (CPU - upper 50s, GPU - low 70s). What else should I look for?

This system is a little over 4 years old:
CPU - P4 3.2 GHz
MB - Zenith CJS
Mem - 2GB
Video - NVidia 6800 GT
OS - Win XP SP3

Thanks for any help.

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In reply to: computer locks up during games, no mouse, no keyboard

Well the way i have resolved this is updating the driver or going to screen refresh rate and up the mhz in screen refresh. if that dont work you could put another fan on the card itself you can wire it up in front of the card or just take cover off tower sounds to me not enough cooling and if graphics is stand alone card not integrated then this is surely your problem your computer only monitors the cpu nothing more so card could be over heating try this and let me know if it worked if not then ill give more help

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no GPU temperature problem

In reply to: video

The NVidia cards come with software to monitor the GPU temperature. Mine stays in the low 60s (idle) to low 70s (checked immediately after a game session). The standard cutoff temperature is 120C, so GPU temperature is not the problem.

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Then update drivers

In reply to: no GPU temperature problem

The drivers could be out of date how old is the card. Plus try the refresh rate on screen propertys to do this right click on the desktop background and click properties. then click settings tab, then click advanced and go to refresh rate you have to shift between tabs but you will find refresh rate or your graphics card might not be capatible with your computer we will do process of elimination and i will do what i can to help i have tracked this discussion and i get emails when someone adds to it

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