I upgraded from Windows XP SP3 to Windows 7 Enterprise, installed the drivers of every device that needed one, including that of the nVidia GEForce 210 graphic card, which I downloaded from the nVidia official website. Then, I installed updates from Windows Update and some other needed programs, and in the end, GTA San Andreas and Off-Road Drive. Started playing GTA and after some seconds there is this BSDO and computer restarts. Tried it with Off-Road Drive, the same. I will attach the dump files created from the PC, but I think it is something related to the graphic card or graphic card driver, anyways, since it is annoying and I am bit confused, it would be of really great help if you guys could give me an idea.