So here is my story. About 2 weeks ago my computer stopped working. It would constantly reboot itself after maybe 15 seconds with no BSOD no anything. It was like someone pressed the reset button. Now I took it in to get repairs and it worked fine up until now. Ocassionally my computer will restart just like if I had pressed the restart button on my case it happens maybe a few times a day nowhere near as much is it did before. It doesn't give me a BSOD the screen just goes black the lights in front of my case kinda flicker (although a few times it takes a lot longer for it to restart. I'll also hear kind of a whirring sound in my case which i'm not really sure what it is). There doesn't seem to be any trigger for this as it's happened while playing video games, while watching a movie, while using Firefox, while just idling while I was at school. My current OS is windows 7 and I've heard some people have problems like this too with Windows 7 but I don't know if it's a OS problem or not. Does anyone have any guesses or ideas as to what it could be?