Last night when I went to bed then my computer was operating completely normally. However, when I woke up this morning then something was using up 100% of my CPU. No matter how many times I reset then it stays at 100%. I've already used adaware and found nothing and I'm Avasting right now. I haven't downloaded anything unusual lately nor do I ever open email attachments. Also, there's nothing unusual running in the background.
If anyone has any idea what's going on then please let me know. I've never had a problem like this before.