Computer starts up as normal; speed seems to be fine. Checked processes; hardly anything running. 0% cpu usage. 850mb (or there abouts) of physical memory used. Win 7 64bit ultimate 4gb ram intel i5 740 As soon as I do anything it either slows to a deathly crawl or freezes everything except the pointer, but eventually this will freeze as well. For example:-- pick a song in winamp and it'll play but within a minute or almost straight away the sound stays fine but winamp appears to be unresposnsive as the eq thing is frozen along with the time and then every now and again it will update. I've left the computer for a while after it did this and I closed winamp with it still being really slow then all of a sudden it was back to normal speed. Then it slowed down again when trying to do the same thing again. If I start firefox it will start just fine but I can get about as far as getting my bookmark list up and then it'll freeze - sometimes able to move the pointer sometimes not but eventually this will stop as well. Once it gets like this though it is completely frozen and even leaving it for a few hours didn't make it respond unlike when i just played a song in winamp and then managed to get it closed after it slowed down and then the computer responded ok afterwards. What shall I do? get into safe mode and try to reinstall graphics drivers? Or get in, back up everything and then format and reinstall windows? There's nothing showing up in task manager but do you think it might be a virus or malware doing this? Thanks guys.