It sounds very likely that you have faulty ram (use Memcheck) or an overheating graphics card. It could also be an old Motherboard BIOS. I say this because I h

It sounds very likely that you have faulty ram (use Memcheck) or an overheating graphics card. It could also be an old Motherboard BIOS. I say this because I have had the same thing (crashing games) on my own computers and eventually traced it to those causes.