HDMI socket appears to have stopped working sudenly - help!

[TPMB12]

OK you probably seen my posts on setting up a better workstation for home and work computers. It has all been going well so far until about an hour ago when my acer K222HQL monitor suddenly said inout not detected. Cue usual investigations. Check updates (all up to date) run myasus app diagnostics - all ok. Chack HDMI cables are in was obviiously first check, they were and I tried a second cable and nothing there neither. I tried hooking up my old laptop to my monitor and it worked with both HDMI cables I tried.

What gets me was that I have been using my monitor with my laptop closed ok since this morning until an hour ago when it went off. Turned everything off and on again - well an IT standby had to be tried.

i have gone into settings, control panel and used verious help centres for the ACER monitor and my ASUS laptop. One thing with the control panel is that I cannot see anything refering to HDMI in there. expanded everything and the four letters HDMI is not there.

Anyone got a clue what has happened, changed and how to fix it. Nothing is showing in any troubleshooter such as windows 11 one ( due to be removed) or the MyASUS app diagnostics.

What is the point of setting up my workstation with a personal external monitor when myh HDMI does not talk to myh monitor? The laptop was bought in June this year and has been registered with ASUS. So if faulty I should still be under warranty.

So does anyone have a clue what I can do to investigate and hopefully sort this.

One lasst point the monitor is powered and works with the same cables with another laptop so it does appear to me to be related ot my ASUS Vivobook 15 laptop, drivers or OS.

[mrcharly-YHT]

Have you turned it off and on again?

[liam_whippet]

Also, have you tried taking the HDMI plug out of the laptop and plugging it back in again?

[TPMB12]

Off and on again, checked the plugs at each end, replaced the cables and tried it on another pc which worked ok. Checked updates, drivers, etc.

Then stopped using the monitor totally peed off.

Had a few spare minutes before a meeting so I turtned it all on and plugged it all up again. Can you guess what happened? Yes it is now all working again!!

I seriously checked everything I could think of checking. I googled and followed all actions except messing with the BIOS. Nothing worked at all. WIthout doing anything it has started to work this morning!!!

[mrcharly-YHT]

At random intervals, my setup decides that one or both of my external monitors can't be detected. I have to power cycle the docking station and then they come back up.

Shoddy poor firmware that gets tripped by a software interrupt is my guess.

[rafletcher]

At random intervals, my setup decides that one or both of my external monitors can't be detected. I have to power cycle the docking station and then they come back up.

Shoddy poor firmware that gets tripped by a software interrupt is my guess.

This. We have to lock our PCs when AFK. Every now and then one or both of my external monitors declines to reactivate and they need power cycling.

[lissotriton]

Any shortcut key to switch on the external screen? Usually something like Fn+F8.