I've been having this problem for about a week now. The % of cpu usage jumps all over from 3% to 80% constantly. When programs are actually running it will be especially high but it is high even when nothing is running. I've run a few spyware and virus scans, cleaned up the hard drive, removed old junk programs, minimized what was on the startup. I'm out of ideas and it's getting to be a real headache waiting 2min for a window to open. Sometimes it runs like normal but more often than not it will be super laggy. Pleas help me fix this!!!