Computer freezes (and screen changes colors) when playing games with Windows 7

I upgraded from Windows Vista to Windows 7 view a month ago and since then I had problems. I'm going to play a game like Left 4 Dead 2, World of Warcraft, counter-strike: Source, etc and I suddenly freezes. My screen freezes and the colors a bit (some of the colors will turn red and some of the colors will turn to a brighter color, etc.). The sound will also freeze and repeat a few milliseconds what it was. My computer is plugged into a power bar and is kept nice and cold, with a fan who helps him at all times and my window still open - there is some dust out there but I don't think she'd cela.

This happens maybe once or twice every two days, and it has never happened when I'm not in a game. It is not a memory problem, I'm only using about 2 GB, 3 GB when it arrives. I always end up having to press the power button on my computer to restart it.

Help, please.

Tyvak,
The first suggestion that Aziz has is not the map upgrade but for the driver update.  After the upgrade to Windows 7, you must update all the drivers for your hardware (graphics, sound, NETWORK, card etc...).  The best way to do it is to go on the hardware manufacturer's website and get the latest drivers.  If you have a name brand PC (Dell, HP, etc.) then they usually all drivers for the hardware, but some (usually the drivers graphics) is perhaps not the most recent.  First, make sure that your drivers are up to date and then test the games. Mike - Engineer Support Microsoft Answers
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Tags: Windows

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