How do I boot up into safe mode now? Before my mobo/CPU replacement I had several F key options I could press to get me into different OS modes. There would be this black screen just for a split second that would, if selected at that time would to take you to safe mode, bios, system recovery. Those key were F2, F10 and F11. Now I don't have that option, all I have is with the new Asus mobo is delete key to get into bios. Is there a key to press at boot up to accomplish this now.