Hi Assuming you are using Windows XP.... Press CTRL-ALT-DELETE on your keyboard and click "Task Manager". Click on the "Processes" tab and look for the process that has a high value in the cpu column. Then report back...
RE: But which process is chewing up the processor? firefox was showing 89%, pc pitstop said a virus, several scans later (none of em showing a virus) back up to speed cpu now says 0-5