Every five seconds or so, my cpu performance jumps up by around 20%... this started maybe 3 weeks ago or so, but I have no idea what would have caused it. After defragging, deleting files, running virus check, etc, I still came up with nothing, and no one seems to know whats wrong. So with a little exploring I ran into the program "Process Explorer", and tried that out... well, through that, it looks as if one process is causing the spike: ntoskrnl. However, after looking at this a little bit, it seems to be an important file, but also one that shouldn't be running at this time. Is this the problem at all? If so, what can I do about it? If its not the problem, does anyone have any idea what else it can be?