Restarting the machine is a classic IT fix.
If it hasn't been restarted in a while, I would certainly do that - may not fix the problem though.
It seems a bit odd that the menus highlight but can't be clicked on.
Manually resize the main Archicad program window to pull it away from the edges of the screen.
Can you pick the menus now?
Other than that I would try re-applying the default Work Environment.
If that still doesn't work I would consider re-installing Archicad.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11