Hi, how often does this happen? The only thing I can suggest is make sure all your drivers are up to date eg chipset/motherboard, Sound, graphics and that the motherboard bios is up to date. Also check you have all the updates/hotfixes needed for your system, you could also check out this old thread for more info' :http://winvistaforums.com/windows-vi...rformance.html
Hope this helps, if not please post back.

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