Alright so basically I have 3 types of freezing/crashing happening: One, is the screen just goes black but the computer doesn't totally shut down (I can still talk for about 5 minutes after the "crash" to people on skype). The second is the screen goes plain blue or white. Finally, the third (and most prominent) is my computer freezes with the screen still visible and when I move my mouse around the color of the screen distorts. (example: mouse stops moving even when I move the physical mouse around and after about 2 seconds of moving the "frozen mouse" around, the screen starts to distort with more and more intensity the more I move the mouse) Any help please? By the way, I recently got a fan that sits under the computer because I thought it was over heating but the problem persists even with the computer being cool. EDIT: Also, with all cases, it doesn't shut the computer down. I have to hold the laptop's power button to shut it down.