OK so I built my first PC in October, so note I am a novice. But Im hoping that could be the issue, though I doubt it. So my Pc has been working fine when suddenly when I get to my lock screen to unlock the pc (Win. 8) nothing seems to work. Normally when I click the screen shifts to input the pass, but I click and nothing happens. The first time I happened a simple replug-in worked but now it doesn't. I know the mouse works on everthing else, and the Pc is picking it up because the laser is on. But I get no response. Also the keyboard also gets picked up and the only buttons that will work are my multimedia keys, I can sleep, mute, and turn up and down the volume. So I know that everythings being picked up, just not working. Idk what to do and its driving me insane. All I want to do is play SimCity. Is that so much to ask???????????????????????????????????????????????????????????????????? Please help me