I have this problem every now and then after Windows Updates.
Windows loads in a black screen and only the mouse shows. Not even cntrl alt del works, Windows Repair does not help, Sytem Restore does not help, removing update does not help.
I believe is a problem with the video card and the integrated video capabilities of the intel chip.
I SOLVED IT by unplugging the monitors, sutting down the pc, turning it on, waiting for it to load and connecting the monitor, the screen loads and works normally.
Hope this works for some of you.
If you can find a permanent solution please advice.
Antonio Morales