My iMac does not start correctly. Instead, I just a gray screen. Safe mode starts, it's ok. No problem. So I ask what next step can I try? Thank you very much

My iMac does not start correctly. Instead, I have a gray white screen. Safe mode starts, it's ok. No problem. But not in safe mode, only grey screen again.  So I ask what next step can I try? Thank you very much and sorry for my bad English.

Reinstall El Capitan without erasing the drive

Make sure that you have a current backup before continuing.

HD recovery start:

Restart the computer after the ring, press in and hold the COMMAND and R keys until the menu screen to appear.

Repair

When the recovery menu appears, select disk utility and press the continue button. Disk utility charges and select Macintosh HD entry indented from the list on the left.  Click the first aid tab in the toolbar... If disk utility reports any errors that have been corrected, then re-run first aid until no errors are reported. Wait until the operation is complete, then quit disk utility and return to the main menu. Select restart from the Apple menu.

Reinstall OS X: Select reinstall OS X and click on the continue button.

Note : You will need an active Internet connection. I suggest to use Ethernet if possible because it's three times faster than Wi - Fi and more reliable.

In the future please post in the appropriate forum. Your question is not related to the developers forum. I will take care of moved it.

Tags: Mac

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