Question marks everywhere

You have a bad Font, Problems on Hard Drive, or Corrupted OS.

Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode?

Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.

If need be...

Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold ...

Command (⌘)-R

Installs the latest macOS that was installed on your Mac.

MappleInk Said:

"Question marks everywhere I launched system and it started to display question marks everywhere. I winder what is the cause of this and what is solution. Please see attached photos."

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Google this Search Queue: "question marks"+"macos" site:discussions.apple.com

Gulp, do let us know the outcome please.