Im having some weird restarts recently. When I want to copy a large file ( 700 MB ) from one HDD to another my Pc restarts after a time and I cant copy it, no matter how much I try. I have 2 HDD in my PC, one is connected to the Primary IDE channel and the second on the Seconadry IDE channel, both HDD's are MASTER. I turned off automatic restart on System failure to see what is causing the problem and for me is NPFS.SYS file whats seems to be causing the problem. Please help me, much appreciate your efforts.