My computer keeps freezing roughly 10 minutes after starting up every time. It always starts up fine but after running for around 10 mins it freezes. Sometimes when it freezes I can just about move the mouse pointer around but it is super slow and laggy. I can't get up the task manager or start menu etc after it has frozen. I am running windows XP on a very decent system (Quad core, 4gig Ram etc). I also have a 1TB harddrive and have recently used up quite a lot of space on that in a relatively short space of time (I have been editing variouse films). Could this have something to do with it? The drive is partitioned into two 500gb sections. One section has about 90gb left and the other has about 350gb. Does anyone have any idea what could be happening here? I have never seen a computer do this before.