I have an HP Pavilion a820n that I formatted and reinstalled Windows XP because it had a virus and now it keeps saying there is low disk space (about 415 MB) and when you try to run videos it keeps stopping and starting. It has a 6G hard drive and about 1G of RAM. Before it got the virus it ran videos fine and never said it had low disk space. The only program it has besides the bare necessities is CA Internet Security Suite which it did not have before the virus. Anyone have a clue what the problem is? Thanks!