Hi
Welcome to Microsoft community.
I know you're having trouble with your display settings. Here's how you can disable monitor #3, which is being detected as a soundbar:
- Open Display Settings: Right-click on your desktop and select "Display settings" from the dropdown menu.
- Identify the Monitor: In the Display settings, each monitor connected to your computer is represented with a number. Identify the soundbar that is being detected as a monitor (in your case, #3).
- Disable the Monitor: Click on the box representing monitor #3. Scroll down to the "Multiple displays" section and click on the dropdown menu. Select the "Disconnect this display" option.
- Apply and Keep Changes: After selecting "Disconnect this display", click on "Apply". A pop-up window will appear asking if you want to keep these display settings. Click on "Keep changes" if the issue has been resolved or "Revert" if not.
If this doesn't solve your issue, it might be due to the soundbar being connected via HDMI. HDMI carries both audio and video signals, and your computer might be mistakenly identifying the soundbar as a secondary display. If possible, try connecting the soundbar via a different method, such as Bluetooth or a 3.5mm audio cable.
Remember, messing with display settings can sometimes cause unexpected results. If you experience any issues, you can always reset your display settings: go back to "Display settings", scroll down to "Advanced display settings", then "Display adapter properties for Display 1". In the new window, click on "List All Modes", select your original setting, and click "OK" and "Apply".
Best regards
Derrick Qian | Microsoft Community Support Specialist