Acer aspire

more information would be helpful.
model
OS
System specs
for starters.

Sometimes the actual screen can die, but we can't really help, without knowing more about it. (seen this happened on a very old notebook)
 
Could be a failed backlight. Shine a flashlight on it and see if you can see some of the screen. Either way, more info would be helpful in figuring out the problem.
 
Could be a failed video card, I had a 7720z with a dead 8400m - the laptop would boot, enter windows, work but nothing on screen at any given time.