macbook air screen turns black.
Sometimes my screen turns black but my keyboard light is then still on. I have to restart my laptop and then it works again. What is this?
MacBook Air
Go step by step and test.
1. Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own"
2.Reset PRAM. http://support.apple.com/kb/PH4405
3. http://support.apple.com/kb/PH10930
Best.