Windows 10: Windows 10 multiple non-existent screens

I only have 1 monitor but windows showing 2 screen.And it causing stutter and screen flickering.The stutter least for about 30-40 second.In the meantime I cannot do anything.My whole system completely freezes.NB: I'm using the latest graphics driver.Pc specs: Intel i5 9400fXFX rx570 8gb2666 ddr4 8gb ramAsrock b365m motherboard

:)

 

Windows 10 multiple non-existent screens

Ernie - trouble shooting is listed in original post - but just to be sure - here is what I have tried:

1. in Advanced display settings, select one of the non-existent screens, select Disconnect this display in the Multiple Displays drop down - however the Apply button always remains greyed out so you can never complete the disconnect action.

2. Open Device Manager and list the Monitors. It shows 5 monitors listed - 4 of them are listed as Generic non-PNP. If I delete all these monitors, Display Settings still shows the multiple non-existent screens and after a restart Device Manager is again
populated with the 5 monitors.

3. Open Regedit and search for "display" in HKLM. This lists 5 keys that look like they may be referring to the multiple screens. Deleting all these keys and then checking Display Settings again shows no change - the non-existent screens are still being
shown as present.

4. As the laptop is dual graphics Intel/Nvidia - alternately disable one or other graphics controller. Makes no difference.

5. Install latest display driver from Intel and install. Disable Nvidia. Checking Display Settings still shows the multiple non-existent screens.

Things I have not tried so far:

1. Reverting back to a previous system restore point - there is no convenient restore point recent enough to this problem. Most recent restore point looks like it is from a date where restoring to it will lose me a number of significant changes which for
the moment I am reluctant to do - and no idea if it will make any difference.

2. Backup my data files and restore Windows back to it's original installation state. Bit drastic also...

So - open to other ideas. Seems to me windows must be storing some monitor objects somewhere that it thinks are still valid. How do I find them and remove them?

Thanks

 

Windows 10 multiple non-existent screens

I see some similar posts to this - but no existing solutions are working for me. So - here we go again...

Windows 10 Pro Version 1607. Dell Precision 5510. After some pain trying to get a projector working when connected to HDMI port on the laptop - I ended up with Windows thinking it has 4 other screens connected. See image:





Screen 1 is the laptop screen. As you can see - you can select the other (non-existent) screens but although you can select Disconnect this display from the Multiple displays box - the Apply button is always inactive. So - no way to remove these screens.
Device Manager also thinks there are 4 other Generic non-PNP monitors configured - and although I can delete these - after a restart they just reappear again. I see entries in the registry under HKLM/Hardware/Devicemap/Video that look like multiple screen
instances - but if they are deleted - they just reappear again.

This laptop is actually a dual graphics system - Intel & Nvidia - however I'm running with the Nvidia graphics disabled so only using Intel graphics controllers. This is running driver version 4501 which is latest I find from Intel. However - problem remains
the same whether Nvidia is enabled or not - so I think graphics driver is not relevant.

Any ideas from anybody?

Thanks...

 

Windows 10 multiple non-existent screens

Ernie - have run SFC tool - here are the results:

C:\WINDOWS\system32>sfc /scannow
Beginning system scan. This process will take some time.
Beginning verification phase of system scan.

Verification 100% complete.
Windows Resource Protection did not find any integrity violations.

So - regret that was not the answer.

Have upgraded the Nvidia driver for the Quadro M1000M graphics device and it is now on driver version 21.21.13.6949.

Regret that also makes no difference. I still have the multiple non-existent screens shonw in display settings as per the screen shot in the original post.

Any other ideas apart from a clean install?

Windows must be storing information somewhere that makes it think these screens are connected. How do we find this information?

Thanks...