I have a Dell dimension 4700 thats about 3 1/2 yrs old. The other day I left it on while I went to work, and I while I was gone the power went out. When I tried to turn my computer on the next day all I got was the inital loading screen and then the screen goes blank except for a blinking cursor. I've tried to get into setup and all that does is give me the same blank screen. I've also tried to get into the boot menu, but when I press the button it tells me I have a keyboard error. I tried a second keyboard with the same results. I'm out of ideas for fixing my computer, does anybody else have any suggestions?