Every time i am on my computer doing anything it just crashes or freezes. I have re-stored factory settings many time and still not joy. I have F-Secure 2006 Internet security and can'y find any viruses. Everytime it crashes it re-boots and does a scan disk and keeps finding errors with files and keeps truncating them. Sometimes i have to wait an hour or so to be able to get back into the PC as it just keeps re-booting again and again. Please help... What do i do?