How to fix a crashed (black screen) computer?
(Anchorage, AK USA)
I am running Windows Vista Home Premium 64-bit (a nightmare in itself) and attempted to upgrade to Windows 7 Ultimate 64-bit. At first I got an incomplete installation and it rolled back. Upon the 2nd attempt, I got the same, it hung, then a black screen. Now, however, when I restart my computer, even after trying various "safe" modes, I get so far as the pulsating Windows icon screen and then...nothing...no cursor, no prompt. I am also not able to start from a boot disk.
According to some forums, it may be that the registry needs repair. How do I repair a computer in this state...not even a dos prompt?