If I try to start it normally, it resets after the starting windows screen.
If I try to use the other boot options (safe mode, etc), I get 'Windows is loading files' and then a black screen with a movable white cursor.
The repair options all end up at the same black screen with cursor.
If I boot from the Windows 7 disc, after the 'press any key to boot from the DVD' screen, I don't get any options to install Windows, or select a language, I just get either the same starting windows > black screen with cursor, or the same list of repair \ safe mode options, all of which end up at the black screen with cursor.
If I boot from the Windows 7 recovery disc, after 'press any key to boot from the dvd' I get 'Windows is loading files', and then... the black screen with white cursor.
stupid question: Is your windows activated?
A friend of mine had the same problem. He got a black screen with a white cursor. But after waiting some minutes (he has a slow pc) the windows activation screen appeared.