Camera not detected

Camera not detected


We recommend this article for IT members of schools or districts.

If a message indicates that the camera is not detected or if the calibration screen is a blank white screen, we recommend that you follow these steps one by one to resolve the problem:

Lü 2nd generation












1. Ask the IT department of the school to validate if Windows OS is on the last Windows 10 update available.

2. Restart the Lü application.

3. Shutdown the computer by pressing "win" on the keyboard and select "shutdown". When the screen will display a "HDMI 1 no signal", press the space bar a few times until the computer boots 
(you can try this step a second time).


4. Turn off the computer and the projector. Then, turn off the breaker on which Lü is installed for at least 2 minutes and turn it back on.


Lü 1st Generation










1. Ask the IT department of the school to validate if Windows OS is on the last Windows 10 update available.

2. Restart the Lü application.

3. Restart the computer (you can try this step a second time).

4. Turn off the computer and turn off the breaker on which Lü is installed for at least 2 minutes and turn it back on.


If the problem still persists despite trying the solutions above, please contact Lü Support Team.
support@play-lu.com
1-855-781-0797 ext 2





    • Related Articles

    • How to calibrate the camera

      We recommend this article for IT members of schools or districts. You don't need to calibrate the camera every time you're using your Lü. Calibration should be performed when the detection of the ball on the wall is inaccurate or when there are false ...
    • Blue screen "HDMI 1 no signal"

      Step 1: Check Projector Source Ensure that the projector is set to the correct source: Press the "HDMI 1" button on the top of the projector's remote to select HDMI 1 as the source. If there's no response, try selecting HDMI 2 instead. Step 2: ...
    • Lü 1st generation - Change the image ratio

      If any part of the screen does not display correctly in the projection, the aspect ratio may have been accidentally changed. To change the image ratio and thus have a full screen, press the Aspect button using the projector remote control and choose ...
    • My Lü app is not working properly

      We recommend this article for IT members of schools or districts. If your Lü application is not working properly, first close the Lü application using the ALT and F4 keys simultaneously. Then, open the application by double-clicking on the Lü ...
    • How to use Reflector Teacher and Reflector 4

      We recommend this article for IT members of schools or districts Reflector Teacher and Reflector 4 are powerful screens mirroring and wireless media streaming software. You will be able to share the screen of your phone, tablet, or computer on your ...