Computer stopped booting correctly

Raelos1

Honorable
Aug 26, 2013
2
0
10,510
I've just gotten my pc back from a repair company, and when attempting to start it it goes to a black screen with a blinking underscore. It has a new western digital harddrive in place, and I can get it to boot to desktop-but once it restarts, it goes straight back to the black screen. Is it possible to fix this?? Sometimes when I get the boot screen for windows 7 with the logo, then it just sits like that.
 

Raelos1

Honorable
Aug 26, 2013
2
0
10,510
I've tried that- it goes to the black screen automatically, but when I get it to boot to desktop it continues on with the repair as if it had been restarted with no interruptions- and there aren't any restore points on it, it was wiped when sent back.