Question Could a display setting cause no output detected error prompt on the monitor screen?

[MasterBlaster22]

Could a display setting cause no output detected error prompt on the monitor screen?

I was using my PC with Radeon Graphics and Adreneline software on a HDR LG Monitor with HDMI. It was fine

The New owner of the PC has a Dell Gaming Monitor hooked to the GPU with an HDMI cable. The Dell Monitor responds only with "no signal detected.":
We tried switching upbetween HDMI 1, HDMI 2 - but to no avail

The SAME Dell Gaming monitor had been preciously used to run an XBOX and it works for that

We did a Factory reset of the Dell Monitor

So, the Dell Gaming monitor works for the XBOX but not the PC

The guy that bought the PC from me had an older cracked busted curved gaming monitor that he threw a beer can at thought the screen was totally busted but turns out- it just has a huge black crack down the middle.
And We tried that AND - IT WORKS - we have display although it is totally a broken screen.... so...

We have HDMI output on My LG gaming monitor a this house
Also - HDMI output on his broke screen at his house

\
BUT Only Get 'no signal' from the Dell Gaming monitor via HDMI various HDMI inputs chosen


Does the PC and themonitor need to be turned on at the same time?
Should the monitor be ON then boot up the PC?

I'm losing my mind

 

[Ralston18]

HDR configuration?

 

[MasterBlaster22]

HDR configuration?

the monitor that I have at home, it is HDR capable, and windows was set to use HDR applied.

His monitor is not HDR capable. It's older.

 

[Ralston18]

Which model Delll Gaming Monitor?

Drivers up to date?

FYI:

https://www.dell.com/support/home/en-us/product-support/product/g2724d-monitor/drivers