macbook screen is dim and cannot change brightness

For the last couple of days, my macbook's screen has been more dim than normal, and i haven't been able to change it. Nothing happens when i press F2 or FN+F2. I'm wondering if it has anything to do with having the macbook connected to my samsung lcd tv via a mini display to HDMI adapter. It's not connected anymore, but it's been happening since i've done that.

When i go to display settings, there is no setting for brightness.

Please help! this is so hard on my eyes!

MacBook, Mac OS X (10.4.11), MacBook2,1 Processor Name: Intel Core 2 Duo

Posted on Nov 21, 2010 10:09 PM

Reply
4 replies

Nov 22, 2010 4:05 PM in response to Appletiser.

If that does not work then i would suggest resetting the PRAM (which stores system settings)

However before you do so make sure you understand what you are going to loose, so read up about it here first:
http://support.apple.com/kb/HT1379?viewlocale=en_US

-Resetting PRAM and NVRAM-

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

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macbook screen is dim and cannot change brightness

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