I have been using Acer M5 Series for more than 1.5 years without any issues.
But, a month ago it gave me blank screen. It has WINDOWS 8 installed.
The power was on, but displayed blank (black) screen for longer hours. The only thing i was able to do was to hold power button for 5secs and shut down.
Now the solution,
There a small pinhole in the back of the laptop
Take a pin and insert (as shown in picture above).
You can feel like you've presses the button or something.
As soon as you can feel that, press it for 5-10 seconds. Then press the power button to boot your laptop. It should normally start like before.