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 programthat 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 monitor’s brightness control (¤) is not adjusted properly.
Check the monitor’sbrightness control and turn it up if necessary.
mThe Macintosh or the monitor is not getting power.
Make sure the monitor is plugged in and turned on, and that themonitor
cableis firmly connected to both the computer and the monitor.
Make sure the computer’spower cord is firmly connected to the computer
and plugged into a groundedelectrical outlet, and that the outlet has power.
If you have more than one monitor and only one is dark, check that it is set
up correctly in the Monitors control panel. For information on using more
than one monitor, see the “Monitors” topic of Macintosh Guide, available
in the Guide (h) menu.
mThe monitor is plugged into the wrong port on the computer.
Make sure the monitor is plugged into the monitor port (marked with the
™ icon) on the upper-right corner of the computer’s back panel. If the
monitor is plugged into another port, it will not work.
If you are displaying video from your computer on a television screen, it is
normal for your computer monitor to be dark.
The computer won’t start up.
mThe game controller is plugged into the wrong port.
Make sure the game controller is plugged into the joystick port on the
lower-right corner of the computer’s back panel. If the game controller is
plugged into another port, the computer will not start up.
83
Troubleshooting in the Macintosh Environment