Hi,
It would be helpful to know exact Make/Model of your computer and whether it's a desktop or a laptop.
Sounds like you have either a virus or Windows corruption from a failed program or driver.
Have you installed any new software or hardware in the last month or so?
When did this problem first start?
Has this computer every worked properly since you've owned it?
Answering these questions will help us help you.
In the meantime, if you have an XP computer which is the sub-forum you posted in, most likely it's due to a failing or failed hard drive. Download the free SEATOOLS program from seagate.com and run BOTH short and long tests. If SEATOOLS returns any errors, your hard drive has failed and...