I have a white screen with an apple and nothing will work?

Turned my mac on and have a plain screen with an apple logo. Nothing will work?

Hi,
Some kernel extension or driver isn't loading properly, it seems. Try booting in Safe Mode by holding the Shift key down on startup until you reach the grey Apple backdrop with the spinning cogwheel and a progress bar. As soon as the progress bar shows up, you can let go of the Shift key.
Booting in Safe Mode takes a lo-ooong time, so be patient and don't interrupt (the computer booting, not me talking...). Once you've reached a workable Desktop, reboot in normal mode and tell us if it solved your problem.

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