I have a Dell Insiron 3650 (windows 7 pro) When I turn it on it goes to the system diagnostics Dell screen, but the screen is all scrambled. I can't see the words. Not sure if this is a display issue at this point. The problem is everytime I restart the computer it goes into the diagnostics screen and not the OS. The only way to get into the OS is to select F12 (boot options) and then choose the hard drive (Toshiba). Then it boots. I looked at the bios and it shows that the hard drive is the first boot option.