First of all, I have been browsing alot through these forums but as I dont know anything about this I dont get any further with my problem. So I would appreciated an understandable language on this topic if that is possible. The other day while playing minecraft my screen froze and the sound went looping, lagging, not sure what to actually call it. After a few seconds I got a blue screen: http://i1324.photobucket.com/albums/u605/Alina-f/IMAG1922_zps68cff9a8.jpg As I had just bought a new external hardisk, mouse and keyboard that was of course the first thing that came into my mind. Removing and uninstalling everything that came with this and it still happend, just a few seconds after opening a game. (minecraft, world of warcraft, planetside 2) After letting the computer be off for a day I was able to play perfectly fine again without any issues until today where it repeats itself again(2 days after last episode), but this time without a blue screen. Just freeze, the sound and then reboot. It doesnt always reboot either but just stays in the frozen screen with the noise. Also when it reboot it sometimes happens that windoes wont start up again, and screen gets weird colours. http://i1324.photobucket.com/albums/u605/Alina-f/IMAG1923_zpse6b6a08c.jpg And as I dont know anything about computer I dont even know where to start looking or what different things means. But I have opend up my computer and "cleaned" it with compressed air box, without taking out any part. As I dont know how to take parts out, add cooling paste, what a cpu or anything else looks like. I know what my motherboard is and I know what my graphic card is. Thats all my knowledge on this topic. I have also checked my fans, they all seem to work. And on startup I also got a scan system option but this one did not find any issues. And as I read in an other thread I made my computer crash again to get a log on what happend. As I cant read this log myself I will post the report under. I have also bought a new graphic card which will be here in a few days, EVGA GeForce GTX 660Ti 3GB PhysX CUDA, but as I dont know what the actual problem is I dont wish to put the new one in. I dont know if anything can get damage if something else is wrong etc. so I dont dare to take chances when not knowing what I am doing.