Is it possible to disable the HDMI output in Windows, so that, when you connect an HDMI device, the system doesn't react to it? There's usually a second screen connect via HDMI, but I just want it to show information when I need it. Now, it always shows a part of the screen, so I have to switch to "Only this pc" in the Project (Windows+P) menu. That asks too much time, as I have to do it each time. So, is it possible to disable the HDMI output and, if so, how?
34 Answers
I know this is an old post but answering for anyone that needed it as I did!
If you have it, the Nvidia Control Panel will allow you to select which monitor you would like to use and deselect those you are not using!
If you use a different GPU perhaps there is a Graphics Card Controller that does the same.
Fantastic in my case for switching from my work monitor to my Tv when needed without pushing the graphics card to run both at once.
1This is a bit of a hack,but it might work. If you bought a 2 port HDMI switcher. You could have the switch set on 2 until you need the port.
Anything on port 1 would be invisible, and port 2 would be empty so windows won't detect anything.
Now that means buying a hdmi switcher, but only you can decide if you want to go that far.
If you just want to disable it permanent your answer is in the computer BIOS. You have to access your computers BIOS and set the HDMI Device state to Disabled of Off.
Cheers!
1As above, the BIOS settings allows you to set the state of your HDMI device. The easiest way to get there is from the Settings app on your PC (assuming Windows 10). Choose Update and Security > Recovery > Restart Now (under Advanced setup). Your computer will restart and show a blue screen with an option called Troubleshooting. Click that, then go to Advanced options > UEFI Firmware Settings > Restart.
- Navigate to settings. You can get there by clicking the gear icon on the Start menu.
- Select Update & security.
- Select Recovery from the left menu.
- Click Restart Now under Advanced startup. The comptuer will reboot to a special menu.
- Click Troubleshoot.
- Click Advanced options.
- Select UEFI Firmware Settings.
- Click Restart. Your system will restart and take you to the BIOS. How to Access the BIOS on a Windows 10 PC from Laptop Mag
There is also a keyboard shortcut you can use to go straight to BIOS when you first boot your PC. A list of these can be found here.
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