When downgrading to windows 7 from windows 10 computer goes into a infinite loop then hours later my computer goes into system repair. I have a hp compaq 6910p 32 gb 2000 MHz thats from 2009 with no disk. My pc will not start up everytime I go to start windows normally i get the bdos, everytime i try to go into safe mode the Bdos comes up still . i tried some of the methods ive seen on this website all day, none of them worked. can anyone help me out here?