I've been using Windows 7 for 5 years now and have never updated a thing. The computer is never online. I haven't had a problem until a while ago when I had to restore from a backup because windows would not boot up. Ever since then things have been noticeably slower. Again, it hasn't been an issue until I got a couple of CPU heavy plugins (that I really like). Now, when the CPU meter in Reaper reads any more than 20%, it gets ugly. Real ugly. Lots of noise. It's almost like when I did the restore from backup that I doubled up on the files or something to slow it all down - if that's possible. I've done searches on different forums and gone through a number of steps to try and speed things up, to no avail. Any suggestions? Intel Core i7 CPU 920 @ 2.67 GHz 6 GB Ram Windows 7 64 bit.