recently my PC, home built of course, has been having seizures. Mostly it thinks my mouse is clicking everything numerous times when I move it around. Ie if I click start it opens sims 3, dark souls, skype etc. It also has no control over switching windows anymore as closing a window makes something entirely unrelated pop up.if I try to use ctrl-alt-del to get out to and try task manager the screen flash through the prompts and I get the welcome screen from login. The only way out has been the reset switch on the front. What's the root of this issue? All I've installed in the past month are steam games and no I've done hardware changes for over 3 months now.