Delete buttons do not work after the update of 10.11.16.

Delete buttons do not work after the update of 10.11.16.  The delete button works if I pointed out and then delete, but not if I use the "back" button or try a removal of uniqueness.  It is a problem in all applications.  I tried it in textedit, search google chrome, safari search and find finder engine.  There seems to be a 'problem' of the keyboard' as far as I know nothing happened to my keyboard, IE the spilt coffee, that recent warming has been updated to 10.11.16.  I use an iMac (27-inch, late 2009) with i5 clocked at 2.66 GHz, running OS X El Capitan.

Any suggestion would be appreciated.

Greetings, r.fromstouffville!

It seems that the 'Delete' on your iMac keyboard key works as it is supposed to be after update to OS X 10.11.6. I'll be happy to help you get these keys working again.

Reset of the controller management system (SCM) on your Mac - sometimes it's a matter of simply resetting your iMac SMC. Open this article and scroll down to "Reset the SMC on Mac desktop" section and follow the steps there.

Try safe mode if your Mac does not start -even if your iMac, safe mode startup make sure it starts successfully.

How to test one question in another user on your Mac account - use this article if restarting in safe mode did not help.

Use Time Machine to back up or restore your Mac - if your keyboard does not always work as it should, I recommend you save your iMac to ensure that your personal data are safe. It is always better "to have" a backup for a backup "need."

On OS X Recovery - if you have reached this point, you encounter the same problem in a test user account, that would mean it is a system-w. Start your iMac into Recovery Mode and reinstall the operating system.

Thank you for the communities of Apple Support!

Tags: Mac OS & System Software

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