I have a problem with any game on my computer. I play WoW at about 60-70 FPS on average, and then all of the sudden it dropped to like 2-7 FPS, then when I restart, I can't even open WoW, says 'Unable to find video device' or something, so I update my drivers, restart, then WoW works, but the lag thing still occurs, it plays just fine until it happens, it happens every 10-15 minutes for about 30 seconds, my computer was brand new 2 months ago, and worked perfectly fine until about a week ago. When I try restarting again to try and fix it, it reboots and asks if I want to reboot in safe mode( which I'm using right now) So I continue in normal mode, but the screen pops up empty. No toolbar, no desktop icons. So I figured out that the whole screen has shifted over to the left by a screen's length. I can't see anything and was asking if anyone had a solution for both problems: My screen, and my lag. TY

Try a System restore to a date prior to your problems.

Either by Safe Mode / System Restore

Or: start > All Programs > Accessories > System Tools > System Restore

Thanks! The System restore helped with the screen, but my game still lags and I have no as to why it is lagging =\

Check your Event Viewer as seen here:

Working with Vista’s new Event Viewer

The lag still appears out of nowhere, and I'm not sure as to what I should be looking for in event viewer =\