I was playing around the keys with my mac, and I turned the screen upside down, and I'm trying to put it back to normal on "Display" it would pop up an error. Any help? /:
MacBook Pro, OS X Yosemite (10.10.3)
Go to "~Library/Preferences" and delete "com.apple.systempreferences.plist" then reboot the system could solve the problem.
In system preferences hold down command and option keys, click on the display icon. a separate window will open for the internal and external monitors. choose the rotation from the pulldown menu
Restart the computer in safe mode. Certain caches maintained by the system will be rebuilt.
Safe mode is much slower to start up than normal. The next normal startup may also be somewhat slow.
When the login screen appears, restart as usual (not in safe mode) and test. There's no need to log in while in safe mode.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t start in safe mode. In that case, ask for instructions.
Thanks a bunch!! 😀 😀 It really helped.
My Mac screen is rotated and I cannot turn it back, I try to reverse it but when I go to "Display" it pops up "Preference Error, Could not load display preference pane" any help? /:
