screen saver stopped working setting changed forever appear to work then check the app does not start when the time is in demand

The screen no longer works check all setting is very good and pictures are included in the window but will not start us time is programmed was working fine but stopped for no apparent reason

-Try to start safe mode and normal mode then

OS x: what is Safe Boot, Safe Mode?

-Then try to delete the .plist preferences system

Removal of the preference of the system or another .plist file

Tags: Mac OS & System Software

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