When I boot my computer goes past the first screen, bios. Then it goes to a black screen with a blinking under score in the top left corner. I googled and saw all sorts of recommendations. The first one from windows 7 staff tells a customer to buy a new hard drive. But I decided to try the simple thing first, unplugging all my USB devices. And it worked. Through trial and error I found out it is the keyboard. It work fine if I plug it in after boot. I switched the usb slot the keyboard is plugged into and it still happens. How do I solve this other then getting a new keyboard? Why does this happen? Could this possibly be the reason my computer is getting hotter then normal?