I have a windows 7 netbook and it keeps crashing randomly, it has happened at least 8 times in the last 2 days. When I watch videos sometimes it'll just freeze up and I can't even move the mouse and it replays a split second of audio over and over. It happens when I update too. I don't think it's an overheating problem, would it be a software problem? I'm using it for the first time in about 2 months. I have about 68 important updates waiting for me. Could it be a hardware problem? I took it apart about a month ago and cleaned it out and haven't used it since, could it be that I didn't put it back together right? Thanks in advance, any help is appreciated.