⌘ Command+ C doesnt work and I cant do an "E" by holding ⇧ Shift I already tried:

Force quit Finder
sudo launchctl start/stop com.apple.pboard
System Preferences&gt; Keyboard&gt; Modifier Keys &gt; Restore Defaults
System Preferences&gt; Shortcuts&gt; App Shortcuts&gt; + (when I tried to write the shortcut in &quot;Keyboard Shortcut&quot; Command C doesnt work)

When I try to paste it's  ok, it works. The problem is to copy, the shortcut doesnt work and the edit flash doesnt work too. Its the same with Shift + e
The keys Command, Shift, C and e work separately. They dont work like shortcuts
Model: Macmini6,1
Go to System Preferences and click on the keyboard. A panel opens with 5 tabs at the top.  Click on the Keyboard Tab and a new panel appears.

In this panel click on the button at the bottom which says &quot;Modifier Keys&quot;. This brings up a menu on the previous panel. See image below.

you can define what the command key actually is. Make sure the command key is defined as the Command key.