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I have two displays (one monitor and one TV) connected to my card via DVI. I switch between them with Win+P (when I'm using XBMC I set "only projector"). Most of the time, I use it during late hours, so I just turn off the PC (with XBMC's option "shutdown") and go to sleep. All fine, but on the next day my display is changed (to "only projector").

Bottom line is - how can I set my Windows 7 to have "only monitor" each time system boots?

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Is there a specific reason why you wouldn't just leave both active? It would prevent the switching. Just turn off the device you're not using at the time. –  techturtle Jun 22 '12 at 21:29
    
Yes, my monitor has broken switch. Turning it off means 30 minutes or so of struggling to switch it back on. –  Tomek Buszewski Jun 22 '12 at 21:33
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I figured it out. All you need to do is create a shortcut for DisplaySwitch.exe (indows\system32\DisplaySwitch.exe) with parameter "internal". Then place it in Autostart. And voila ;) –  Tomek Buszewski Jun 22 '12 at 21:37
    
@TomekBuszewski Put it in as a (descriptive) answer. You're allowed to do that. You may have to wait a few hours first though. –  techie007 Jun 22 '12 at 22:04
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I figured it out. Create a shortcut for Windows\system32\DisplaySwitch.exe /internaland place it in StartUp. If this doesn't work, make a registry edit to place it in Autorun:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
Name = Name of the application
Type = REG_SZ (String)
Data ="C:\Windows\system32\DisplaySwitch.exe" /internal

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