I was useing Limewire and all of a sudden my windows started rebooting, now I have security up the ying yang but it seems when I started to click on limewire pro my computer shuts itself down what is the business now that I have removed it from the reg. everything is okay I was getting destored screen and everything when I booted up but now everything is fine, so why I pay for something I cannot use, go figure with windows.

never enogh security, only crashes.

Did you see a blue screen before it crashed & restarted? If yes, then there's an incompatibility issue possibly with your video card. If not, then it may be some form of virus.