|not sure if this has been answered yet so i'm going to answer it.|
ok i have read around the web trying to figure out how to fix my 90% CPU usage, after looking though about 80 pages i gave up and started messing around with my Task Manager. Once i found out how to fix it i felt like crying cause it was so easy, 90% CPU usage don't mean you have a virus or spywear on your computer.
ok lets fix your problem
1.open task manager
2.hit the view right above Processes
3.click update speed
look there your CPU usage is working again