First time start up issue
First time start up. Stuck at window after language choice. Window is about Bluetooth pair up.
Screen frozen. What to do?
iMac Pro
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Apple Bluetooth keyboards have a power switch on the upper right-hand outside edge of the battery bulge.
Edit: just noticed that you appear to have a wired keyboard. There is no switch for that keyboard.
Second Edit: Try: How to reset the SMC of your Mac - Apple Support