1 Reply Latest reply: Oct 17, 2011 9:50 AM by rkaufmann87
dellmarie Level 1 (0 points)

as of first use today, my computer screen will not brighten once I touch keyboard.  it is hard to see my screen.  Does anyone know how to fix this.  I already restarted computer and that didn't do it  HELP

iMac, Mac OS X (10.6.8)
  • rkaufmann87 Level 9 (55,238 points)

    Do a SMC reset then try again.




    • Shut down the computer.
    • Unplug the computer's power cord and all peripherals.
    • Press and hold the power button for 5 seconds.
    • Release the power button.
    • Attach the computers power cable.
    • Press the power button to turn on the computer.




    • Shut down the computer.
    • Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    • Turn on the computer.
    • Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    • Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    • Release the keys.