My MacBook will not boot unless 'Shift' is pressed.
When booting, after Apple logo and wheel I only get a white screen and then nothing. Booting to Safeboot works but does not allow full use of machine. Not a software problem, I think, but what hardware would cause this?
Same result in an Apple store when using their OS disk! They sent me away saying I needed a new one!
Is this a good question?