I recently got the error "A disk read error has occured, press CTRL, ALT and DLTE to restart. I managed to get rid of that error by using startup repair on the Windows 7 disc. I now get a blank screen with a small flashing hyphen on the top left of the screen. Using Windows 7 professional 64-bit. Please help, thank you in advance. I'm using a tablet at the moment, my Skype is 'horwood58' if you need to see the problem through my camera.