Mu computer has been very stable in teal about a month ago. The funny thing is that it only crashes when i play a game or a video. This make me believe that it is my video card not the CPU. I talked to a guy at Best Buy and he told me that my RADEON X800GT is old and that is it may not work with Vista. If this is true then in need a new video card. Can some one conform this before I go out and buy a now card. specs: Graphics: RADEON X800GT Processor:intel pentium D dual core Memory: 2 1gb DDR2 OS: Windows Vista Home Premium 32bit If you suspect that this is not the problem please let me know.