Invalid Format when laptop connected to HDMI TV

[OldWraith]

I messed up display settings for when I attach a TV via HDMI to my laptop. I set the system to display only on the TV (OK, not a totally stupid idea) and then picked a resolution the TV doesn't support (that was TOTALLY stupid!) When I disconnect the TV, laptop display works as normal. As soon as I connect the TV, laptop screen blanks and TV goes to Invalid Format. I have tried to change display settings through the control panel with the TV disconnected, but as soon as I plug in the TV, it goes back to the bad resolution on the TV and no laptop display.

Is this stored in the registry somewhere? I want to reset the flag telling the system to display only on 2nd display.

Please help

 

[Kari]

Hi OldWraith, welcome to the Seven Forums.

This should work:

• Connect the TV, don't mind the Invalid Format warning
• Press WIN + P to open Display Switch dialog. You don't see it as it's on the non-working TV display but trust me, it's there:
  
  

  
  (Screenshot from our tutorial http://www.sevenforums.com/tutorials/10388-display-change-main-display.html)​
• Press Right Arrow > Press Enter to change from Display 2 only to Display 1 only
• Now you should have the desktop on laptop's display, you can change your display settings as you wish

Kari