Windows 11 BLACK SCREEN AFTER UPDATE WINDOWS 11 WITH A MONITOR CONNECTED

[ARRIGHI]

Dear all,
I just did an update of windows 11,
I have a monitor connected, after restart my surface pro 7 stays black and monitor is working.
Important info, when I touch my surface screen, it moves things on minotor screen, as if the sytem is considering my monitor as the computer screen.
How can I reactivate again my surface screen please,
I tried updating things, ctrl windows shift B, forced reset.
thanks for your help
Francois

 

[Neemobeer]

Press Windows key + P and select either 'extended' (all screens) or 'PC only' to use just the main screen

 

[ARRIGHI]

Press Windows key + P and select either 'extended' (all screens) or 'PC only' to use just the main screen

done thanks butnothing happened

 

[bochane]

What happens if you remove the monitor, reboot without monitor?
If your surface screen then works correctly reconnect the monitor and repeat the steps from above.