I've had this problem for a while now. When I try to play games such as Freelancer, Rise of Nations and Civilisation IV my computer will start to work fine for a short while before simply resetting itself. This has even happened a couple of times when I've been on the internet. it seems to happen when I'm scrolling quickly down a page as if it can't handle it. However, I seem to be able to play Football Manager (my only other game) without any problems, apart from once when this too crashed and reset itself. When this happened the last time I clicked on the 'send error report' button on the 'your computer has recovered from a serious error' window which led me to a Microsoft website for downloads. At the top of the page, the title said that my graphics drivers were the problem but offered no specific solution.
I have a A7N8X-VM NFORCE MB & GEFORCE 4 GRAPHICS (SMA) by NVidia and it's 128MB. I went to the NVidia site. Following their instructions I removed my Nvidia windows display driver and replaced it with 84.63_forceware_mobile_winxp2k_international_whql.exe which I think is actually meant for laptops (mine's a desktop) and so it didn't work. I then went back on to the Nvidia site and downloaded 91.47_forceware_mobile_winxp2k_international_whql.exe. This has enabled me to play longer on the games before I start noticing some slowdown and then they eventually crash.
I have telephoned Mesh to ask their advice. All they could advise me to do was to format windows which I have already done previously and which didn't work at all.
I'd be enormously grateful if someone could give me some advice as I really don't know what to do anymore. Apologies too if this is not in the right thread.