Hello all, hopefully ya'll will be able to help me with this problem before I chuck my computer out of the window... Problem: Mouse becomes laggy as crap, COMPLETE computer slow down, during specific times: When this happens: Whenever ANY download happens, be it steam update, chrome download, or utorrent torrent. Today steam was preparing to install CS (doing a fresh install), and before the download process it said it was configuring local files and what not, so I think it is ANY time the harddrive is being used. When I first saw this: I was running vista on the same computer. I bought a new harddrive: Hitachi 2TB 7200 RPM 32mb cache, and installed windows 7 fresh on it as my system drive. I did NOT have this problem in vista. So I think it is either my new harddrive or windows 7. What I've tried so far: Reinstalling everything except windows 7, REALLY want to avoid that. Next step: Wanted to see if there was any way to monitor HD acitivity, hopefully to pinpoint the root cause of problem. Thanks!