Check your connections!

Check the cables and connections – make sure the cable you use is connected properly and solidly to your laptop or adapter.

All our classrooms have HDMI and USB-C connections. If your laptop does not have a USB-C or HDMI connection, it is up to you to provide the appropriate adapter.

This is a USB-C connection	This is a HDMI connection

On the touch panel, make sure you have selected the correct input button for your connection type.

Troubleshooting Windows Laptops

Make sure you have installed all current OS and firmware updates. Check www.support.microsoft.com for more details.

Specific problems and solutions are listed below

PROBLEM

The projector is displaying a blank screen, “Input A – No Signal” or similar message may be displayed.

SOLUTION

Unplug the video cable. Wait 5 seconds. Re-plug the video cable.
 

PROBLEM

The projector displays the computer background image, but not the presentation content.

SOLUTION

• Press the Windows key + P (“p” for projector)
   + 
  This should pop-up a Dual Display menu similar to the one below. Repeating the keystrokes should switch between the different dual display modes. Select “Duplicate” and press Enter.
  

PROBLEM

My presentation content displays OK, but there is no sound.

SOLUTION

• • When using the HDMI or USB-C connections,  audio is carried on the cable, do not plug in any additional cables.
    • Close the program playing the audio, then re-open it.
    • Try unplugging the HDMI or USB-C cable, then plug it back in.
    • Click on the speaker icon in your system tray . Select “AMX DVX2250” or “QSC NV-21” or similar. (The exact wording will vary between rooms)
  •  For ALL connection types increase the volume in 3 places: On the content window (such as a YouTube video), the laptop’s master volume, and the Program Volume on the Touch Panel.
        

PROBLEM

After trying everything above, still no video.

Press the Protected Content button in the upper left corner of the popup window on the touch panel.

Some computers require Protected Content to be enabled, others require it to be disabled. Try enabling/disabling protected content. This has to do with HDCP copyright protection, and even if the media you’re using is not copyright protected, your laptop may require/reject it. Changing this setting won’t hurt anything or get anyone in trouble.

These troubleshooting techniques are also available on the touch panel in the classroom. There will be a button labeled “Laptop Computer Help” in the upper right corner of the laptop pages.

An expanded version of this page, including many more detailed troubleshooting techniques and tips, can be found on this web page.  (Opens in new tab)