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I have a computer display plugged into a DVI port, and TV plugged into the HDMI port. Whenever I turn the TV on it becomes monitor #1.

This is more of an annoyance than a problem, as I can make my computer display the "main display".

The annoyance is that it makes the Windows UI not make sense.

Second Screen
Here selecting PC screen only turns of my computer display, and selecting Second screen only turns of my TV.

I have tried editing the registry, and the suggestions here, but none of them work. As soon as I plug in my TV, it becomes monitor #1.

Based on what I've heard from other people with the same problem, it seems like HDMI will always take over as #1. Is that so?

Is there any way to correct it?

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see superuser.com/questions/232968/… –  ronalchn Oct 29 '12 at 3:23
    
@ronalchn I've read that UltraMon doesn't actually change the numbers. Plus, not exactly a $40 problem. –  Louis Oct 29 '12 at 3:26
    
I am not advocating ultramon, I just linked to it because it appears there is no solution –  ronalchn Oct 29 '12 at 3:31
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2 Answers

Same issue for me. Seems that TV through HDMI always wants to be #1 display. Although I don’t have any troubles with bootup or something else.. All perfectly fine except for Win+P menu. It completely mess around. So I decide to cheat the system by editing resources.

I have English Win7 SP1 64bit (build7601) 96dpi. With two monitors connected: DVI for PC and TV through HDMI If you have same setup you can repeat my way relatively safe. But you MUST to know how to take ownership or boot from LiveCD. If not please don't do it. you can end up with unbootable PC (worst case)

Here is the files, just replace originals (you must to know how to.. if not, don't do it.) And don't forget to backup originals. I also replaced icons to win8 style.

This solution only for logical and good looking Win+P, and don't have any relationship to displays identification. (so it's even more mess from the system point of view) I'm sorry for win7 answer to win8 thread. But this thread is very high at google search. Maybe some one find my solution helpful, I'm spent more then a hour to change resources and write this guide.

Edit: Now I have got some reputation and can attach an image

enter image description here

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No, you can change which display is your main display. To do this go to

Control Panel\Appearance and Personalization\Display\Screen Resolution

either by right clicking on the desktop and selecting Screen Resolution or by hitting Win + W and searching for it.

You will get this screen. Click on the appropriate monitor and check Make this my main display

enter image description here

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This is what I've done, but it doesn't fix the issues I've described. –  Louis Oct 29 '12 at 3:27
    
"This is more of an annoyance than a problem, as I can make my computer display the 'main display'." –  Louis Oct 29 '12 at 3:28
    
Strange, I have 2 monitors through DVI and mini-displayport and one of them is set as the main monitor. When I turn on the TV I go to these settings and click Detect and it switches to my main monitor and the TV. –  Caleb Jares Oct 29 '12 at 3:29
    
Sorry, I skimmed your question. –  Caleb Jares Oct 29 '12 at 3:30
    
No prob... It's my suspicion that it has to do with HDMI. For example, I've read that people with other combinations of ports can just physically swap the cables to change the numbers. –  Louis Oct 29 '12 at 3:31
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