Quote Originally Posted by AlphaOmega View Post
Ok.I just want to be sure that the computer does not think that you have one more monitor then you actually have.This is alos a problem when upgrading to windows 10.It could be outputting the signal to a bogus monitor.This is due to incompatible video cards when you upgrade to windows 10.
So boot the computer.let it do its thing till it stays on the black screen and nothing else happens.wait about 5 or 10 minutes and see if a blinking cursor appears or just your mouse cursor.whether it does or not,press the spacebar and enter your password.(yes,you will be doing this blind)....you should now be logged in (if the problem is the video card).If the desktop does not appear after 30 seconds,the press the windowskey-p down arrow twice and then enter.Its worth a shot.let me know.

P.S..
If this does not work,reboot wait for the black screen and try pressing the windows key+spacebar at the same time.
I'll give it a shot but that beeping is gonna get annoying.