Even with my new processor I am still getting problems with my PC. There is some progress in that I can now access windows and use some applications, but after about 10 minutes of running I get the Blue Screen of Death and the error "Hardware Malfunction". Even stranger, the first time after the computer restarts following the Blue Screen, I get a green screen with the same error.

I have tried all I can think of to fix the problem, including stripping it down to basic components and trying different RAM and graphics cards. As I really am starting to need my PC to carry out my 3D work I have decided to take my computer to a PC shop to get them to have a look at it. I am hoping to know more by the end of the week.