Acer Black Screen on startup

Unplug from power.  Open lid; computer will power on but go into black screen.

Power off, using button on side, but leave lid open.

Then, with (1) computer off and (2) lid open and (3) cord unplugged, push and hold power button for 30 seconds.  Computer will quickly power on and then quickly power off (you will see the Acer logo boot-up screen, but it will power off before going into black screen).  Keep holding power button through all of this for the full 30 seconds.

At the end of 30 seconds, computer will be (should be) off.   Release your finger from power button.  Keep lid open during all of this.

With lid open, plug in AC power.  Press power button as you normally would (you are not holding it this time) to power on.

Computer should start normally.

Worked for me; hope it helps if you're having the same problem.  I'm told it has something to do with static build-up.