Apple's website has a lot of solutions. But for this particular issue, you will need to reset your PRAM. To do this, Shut down the computer.
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Apple's website has a lot of solutions. But for this particular issue,You will either need to reseat your battery, clean out the magsafe power connector on your computer, or you will need to reset your PRAM. To do this, 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.
Via Apple.com (http://support.apple.com/kb/ht1379)
Apple's website has a lot of solutions. But for this particular issue, you will need to reset your PRAM. To do this, 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.
Via Apple.com (http://support.apple.com/kb/ht1379)