I've noticed just this week that my computer seems to pause every second. It happens no matter what program I am in, or even when everything is closed. On movies, online and offline, and music it causes echo. When at the desktop, moving the mouse in circles you can see it pause every second for a fraction of a moment. The harddrive light will actually flash in sync with the pauses during a virus scan where normally it would stay on solid. I am quite certain it is processor related, but cannot pinpoint what would have caused it. The last big thing I remember doing is converting an mpeg file to avi and putting it on dvd. When I played the dvd in another machine the video was choppy with echoes, just the same as playback on the problem machine. I am at a loss as what to try now. I have found similar problems, but those solutions have not changed anything. I reinstalled audio drivers, removed some programs, and defragged the HD. Nothing helped.
Thanks for any ideas,