I bought a USB to HDMI adapter and now all is working. I know this is not a fix but at least I have a work around!
I have an second monitor which suddenly stopped working. The second monitor is detected but displays "HDMI no signal" I have: - updated the display adapter driver - no change - tried the HDMI cable on multiple devices - cable works - hooked up the monitor to another device via HDMI - works fine - tried a brand new monitor - still see HDMI no sign - hooked the laptop to my TV with the HDMI cable - works fine - updated from Windows 10 to Windows 11 - no change - cycled power on monitor and laptop restarting in a different order - no change   Very frustrating as it was working flawlessly for years. Any ideas?
Second Monitor Stopped Working