I have a gateway DX4831 windows 7 desktop computer. When I try to startup it says Windows Error Recovery and I can choose to startup in any of the 4 choices but each one goes to Starting Windows but then gets stuck on a black screen with a mouse pointer. I did not change anything with the computer recently. I read that maybe I should install new drivers but I can't get to a screen where I can do that. I tried holding F8 at startup and get to the advanced Boot Options screen but the up/down arrow on my keyboard does not seem to work correctly. when I push the down arrow it keeps going down to the next entry and gets stuck in a loop. then I can push the up arrow and it randomly stops on one of the choices a few seconds later.