Computer freezing randomly Hello, My computer freezes when I watch videos on youtube or play games or things like that, but it doesn't freeze when I read my mails, write mails, go to this forum, or just not doing anything, ... It just occurs when I watch vids or play games like I already said. I really don't know what cause this could have, I already checked my computer for viruses and used a registry cleaner a few times which fixed all the errors (about 1400...). This also occurs when I do those things offline. The computer doesn't freeze right away when I start a game or watch a vid. It happens between 20 seconds-10 minutes (or rarely 15 minutes max). When it happens, my screen just freezes, the sound also stops and I hear a weird noise for a fraction of a second. The only thing I can do after that is reboot... I've had this problem for like 3-4 weeks now and it's really getting annoying and it just suddenly started one day. EDIT: It's getting worse, my computer just froze while typing in google... , seems to be freezing more random now. Ok now it froze again and this time when it froze it began a looooooong beep, continiously. Not from my stereo but from my computer itself like when it boots up but then it's a short beep now it was continious . I think my computer is going mad! Can someone please help me and tell me how to fix this? Thanks!