Thanks for replys, I have tried most suggestions tho... Done chkdsk and SFC/ scan reported no problems, drivers and pc protection all up to date. Tried running as admin as well without success. I will try remove dust (from GPU,CPU,PSU,etc.) and let you know. I have noticed the CPU usage goes very high when Dune runs, could this cause the crash? Any ideas why?? I think I do have a problem tho cause like I said before Internet explorer keeps crashing, I use Chrome now but when I go on control panel etc keep getting msg Internet explorer will close programme. Tried everything possible to fix but cannot find soloution. Very frustrating!!!