It may be a virus, try this, can't hurt. Turn it off, turn it back on and hold the F8 key down while windows is starting up to get into safe mode (IT guys correct me here if that's the wrong key, been a while since I had to do this). Then run your anti-virus software and hopefully find and kill that bug. But please give me a call before you kick it to the curb, I need parts for a linux machine
ps: If it works my consulting fee is measured in bottles!