My iMac will be either reboot or shutdown of the apple desktop icon

My iMac will be either reboot or shutdown of the apple on the desktop icon. Items saved on the desktop disappear and the menu from the top of the screen disappears, then it is just in this mode for ever more. I then use the switch to stop, which is clearly not the best way to ensure the longtivity of my system.  I use El Capitan 10.11.3 [latest version] I have tried the following but still the same issue.

  1. I ran disk utility, but no hard drive errors appear.
  2. I stop after having disconnected all my other connections (USB components, components lightning etc.), but still no change.

Before you contact Apple directly, just wondering if anyone else out there he has a similar problem. I had my hard drive 3 TB replaced a few months back, in line with a reminder official apple and this problem started to reign around one month or later.

See you soon

Reset the SMC

Reset the management system (SCM) controller on your Mac - Apple Support

Reset the NVRAM

How to reset the NVRAM on your Mac - Apple Support

If it is still not restart or shut down properly

Try safe mode if your Mac does not end commissioning - Apple Support

This is not, reinstall OS X from recovery

How to reinstall OS X on your Mac - Apple Support

If this is not the case, contact your Apple Store, the FSAA or Apple's Support.

http://www.Apple.com/support/contact/

Tags: Mac

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