[HELP] my MacBook Air is stuck in the login after several restsrts “MacOS could not be Installe

[LuanHelp]

I tried going from the High Sierra beta to the full version , I am stuck on the login screen now (as pictured) and it doesn’t go off or login. I tried shutting it down but the fans don’t stop and it instantly goes back to that screen

https://imgur.com/gallery/kRJSH

 

[Darmok N Jalad]

You should just need to hold the power button down for 5 seconds to force a shut down. If you still have trouble, you need to boot into recovery Command+R at boot should get you there.

https://support.apple.com/en-us/HT201314

If that fails, you may need to create a USB flash drive installer to make it back into recovery.

 

[LuanHelp]

You should just need to hold the power button down for 5 seconds to force a shut down. If you still have trouble, you need to boot into recovery Command+R at boot should get you there.

https://support.apple.com/en-us/HT201314

If that fails, you may need to create a USB flash drive installer to make it back into recovery.

I have tried , I can’t power it off

 

[Darmok N Jalad]

Apparently another option is to hold Control + ⌥ Option + ⌘ Command + the power button.