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Richard, Apple Software Engineer
Category: Mac
Satisfied Customers: 38521
Experience:  IT Engineer for over 15 years
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Suddenly my toolbars on the top and bottom have disappeared

Customer Question

Suddenly my toolbars on the top and bottom have disappeared and I have to work at it to make them appear so I can click on something. And I used to be able to show more than one screen at a time, but now when I do anything, even try to get a calculater to work, it closes down all the other pages. I have to hit the safari button to see what pages I have been on.
JA: What OS X (Operating System, e.g. Sierra, El Capitan, Yosemite, etc.) or iOS are you running?
Customer: El Capitan
JA: Have you installed any updates recently?
Customer: No, I don't think so.
JA: What troubleshooting have you tried?
Customer: I have tried going to preferences, but I can't find my problem there.
JA: Anything else you want the Mac expert to know before I connect you?
Customer: It happened all of a sudden.
Submitted: 5 months ago.
Category: Mac
Expert:  Richard replied 5 months ago.

Hi there and welcome

Shut down your Mac.
Find Command (⌘), Option, P, and R on your keyboard.
Turn on your Mac.
Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
Hold these keys until the computer restarts and you hear the startup sound for a second time.
Release the keys.

Then tell me how the mac operates please once it has started.

Thank you