Solutions to common problems
The computer is turned on but the screen is dark.
One of the following is probably the cause:
mYou have a screen saver program that darkens the screen when the computer has not been used for a certain period.
Press a key or move the mouse to turn off the screen saver.
mThe screen control buttons (¸) are not adjusted properly. Turn up the screen’s brightness if necessary.
mThe Macintosh is not getting power.
Check that the computer’s power cord is firmly connected to the computer and plugged into a grounded electrical outlet, and that the outlet has power.
If you are displaying video from your computer on a television screen, it is normal for your computer monitor to be dark.
The computer’s clock keeps time inaccurately.
Your computer has a clock that runs continuously. When the computer is turned off, a battery keeps the clock running. If your clock begins to keep time inaccurately, have your
Troubleshooting 
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