renz496 :
Why did you take out your 570? Anyway boot into safe mode and uninstall nvidia driver.
I removed it to install my new Radeon 280x. I removed all nvidia drivers prior to taking out the card. I also ran ccleaner and driversweeper to be sure they are gone.
The problem is that it still displays an a2/a6 error "IDE detect" and boot loops without the GTX570 in the board.