I installed SP1 after getting numerous install errors, by using a fix provided by Microsoft. When I torn on the PC I get told to do a startup repair, which fails as choosing it just refreshes the same page. If I choose to boot normally, I cant. If I try to boot into safe mode, everything goes accordingly - drivers are listed. Graphics have been set back to 800x600. Then the screen turns blank and the mouse pointer is visible. I can move the pointer but nothing changes on the screen.