- Rescuing your display from resolution despair under Mac OS X
- How To: Reset Display Color Mac OS X
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Method 1. Resetting the NVRAM can fix problems wherein your MacBook Pro isn't playing sound, the display is flickering or turning itself off, the computer is taking too long to start up, and similar problems. Open the Apple menu. Click Shut Down…. It's at the bottom of the Apple menu.
Click Shut Down when prompted. Doing so prompts your MacBook Pro to shut down. Turn back on your Mac.
Press the "Power". Do this immediately after pressing your Mac's "Power" button; you'll need to be pressing all four keys at once before the Apple logo appears. If the Apple logo appears before you press the keys, you'll have to shut down and try again. Continue holding the keys until your Mac finishes starting up. Your Mac may reboot itself during this process. Once you arrive at the user selection screen, you can release the keys and sign into your MacBook Pro like you usually do. You may need to reset some of your preferences e. Verify that the problem has been resolved.
Rescuing your display from resolution despair under Mac OS X
If you are still having issues with the system settings, you may need to factory reset your MacBook Pro. You will lose any data that you have saved on the MacBook if you do so. Method 2. Understand what resetting the battery will fix. To reset the battery, you'll actually reset the SMC System Management Controller which is a small chip that controls things like your Mac's external lights, responses to button presses, and battery management.
Check the symptoms. There are several symptoms that are directly related to the SMC: The fans are loud and running at high speed even though the computer isn't hot and is well-ventilated. Indicator lights battery, backlights, etc. The computer shuts itself down or goes to sleep unexpectedly. The battery does not charge properly. It's at the bottom of the drop-down menu. Your MacBook Pro will shut down. Attach your MacBook Pro to a plugged-in charger. Make sure that the charger is plugged into a wall outlet, then plug the charging end into the port on the right side of your MacBook Pro.
How To: Reset Display Color Mac OS X
Find the SMC reset keys. Press and hold the SMC reset keys for 10 seconds.
Once you've done so, you can release the keys. Press the "Power" button. Doing so should turn on your Mac, prompting it to begin restarting. Once your Mac finishes restarting, your battery issues should be resolved. If you are still having issues with the battery, you may need to factory reset your MacBook Pro. Method 3. Back up your Mac if possible. Since restoring your Mac to its factory settings will erase everything on your hard drive, it's a good idea to back up anything that you want to save before doing so.
If you can't log into your Mac or you're unable to run your Mac's Time Machine, skip this step. Click Restart…. It's near the bottom of the drop-down menu. Click Restart when prompted. Doing so will cause your Mac to begin restarting itself. You'll need to do this immediately after clicking Restart. Release the keys when you see the Apple logo. Your MacBook will begin booting into the Recovery window. This process can take a few minutes to complete. Select Disk Utility. It's in the middle of the Recovery window. Click Continue. This button is in the bottom-right corner of the window.
Doing so opens the Disk Utility window.
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Is there anyway I can reset those settings? Any file to delete? This most likely will not change your graphics settings; however, it was my experience that doing this whole process in "scaled" display from the beginning, allowed me to go back in to settings after restart, and choose "Best for display" and resolve my issue.
YMMV Once in that directory, look for a file that begins with com. Deleting this file can have serious consequences. If I were you, I wouldn't mess with it. If you're determined to try, then edit the file, only removing the dictionary in the plist that contains the screen settings for the external screen.