i have a dell inspiron 4100 where the cpu utilization jumps like a heart beat from 2-5% up to 60-70%. any idea of possible causes? when playing mp3's they stutter when the spikes happen. i tried shutting down all applications and it just doesn't stop. ok it did stop twice but i have no idea why, it seems to happen after being on for 5+ hours but a reboot and it comes back. never rebooting the lap top is not a solution. did all the win updates and no issues with drivers in device manager. happens both wireless and connected to a lan. way open to ideas for trouble shooting.
thanks
thanks