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As of a couple of months ago Windows has started detecting a 2nd "generic non PNP monitor" that is supposedly connected to my laptop. I wouldn't mind this but it's causing problems when I actually do try to connect another monitor. I wasn't able to find any info on the matter and was wondering if anyone else has encountered this problem.

I tried uninstalling the ghost monitor from the device manager but windows somehow "detects" it once again after a while.

I have an NVIDIA GeForce Go 6150 graphics card with the updated drivers and using windows 7 ultimate.

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What does win+P do? – KronoS Jan 20 '11 at 3:27
up vote 3 down vote accepted

This may well be a hardware issue.

The presence of a "non-PNP" VGA monitor is detected by just sensing electrical load on the RGB/HV outputs, so a faulty driver chip or short-circuited board can cause misdetection.

If this is the case, having the video card replaced will fix the problem.

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Is there is any alternative solution that this. Mine is a laptop and has same issue. – Starx Oct 16 '11 at 6:39

In device manager uninstall all the monitors in there and uninstall the video card, reboot the machine. Reinstall drivers if applicable (I didn't have to when I had this problem). I remember what a pain it was when I was having this issue.. it took me a while to figure out it was the second "ghost" monitor. I wonder if it is only affects people running windows 7? I have not seen this on XP.

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i tried that but it just "re-detects" the ghost monitor after a while... – yurib Jan 19 '11 at 23:24
Damn, sorry that's all I had, it fixed the problem for me. I had like 4 pnp monitors in there too... – Not Kyle stop stalking me Jan 20 '11 at 13:26

Choose main display. Ensure it is "1"

Choose "Show Desktop Only on 1" from drop-down.

Choose errant display (which is now grey, not blue) Choose "Remove this Display"

Screenshot with remove this display

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The problem is that there is no such an option as "Remove this display" in this dropdown for the ghost monitor. – thorn Mar 17 at 21:09

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