Windows 10: i plugged in a second monitor then my original monitor ceased being detected

Computer and monitor were working fine. acer xv320qu. gpu 4080 super. windows 10 bought from computer store. I acquired an ONN roku tv and connected HDMI into the HDMI port on the 4080 super - without changing anything on the original setup. The original monitor lost signal, the second monitor fired up as the "extension" and I had to make it primary display. Win 10 does not detect my original acer monitor anymore. under devices it says i have a generic pnp display and a generic non-pnp display. why did it do this. how do I recover the original monitor and run the dual display

:)

 

windows 11 cannot detect my second monitor

Windows 11 cannot detect my second monitor. Help. I did all the suggested troubleshooting steps but nothing seems to work.

 

Windows 10 detecting primary monitor only when second monitor unplugged

Whenever i plug in my second monitor it only detects the second monitor despite my primary monitor being plugged in, if i then unplug my second monitor it detects both monitors despite only having the primary one plugged in, any idea what is happening?

 

Second monitor not detected

Hello,

May we know if you've already tried the suggestion provided by Robert Aldwinckle on forums on this

thread?

If Windows can't detect your second monitor, it's usually a driver problem. It could be due to your video driver being outdated, incorrect or faulty. It's also possible that your monitor driver is causing the problem.

Since the issue occurred after the latest update, it's possible that the video or monitor drivers require an update. Try looking for the updated version of the drivers on the device manufacturer's website and follow their instructions.

If the issue persists, try to roll back the drivers to the last good configuration. To do that, you may follow these steps:

• Right-click the Start button and select Device Manager.
• Right-click your device driver, select Properties, and browse to the
  Driver tab.
• Press the Roll Back Driver option if available, and Windows 10 will begin the process.

Let us know how it turns out.