TSG: Computer does not detect the display
Overview
To use your pen display, your computer must be able to detect the display panel inside it.
Most of the time, when you plug your tablet into your computer, this will work automatically.
Unfortunately, sometimes your computer can have difficulty.
When you plug in your pen display, your computer should detect it as an additional display/monitor in Display Settings. If you don't see another monitor in Display Settings, then for whatever reason it does not think the display part of your pen display is attached.
Don't bother reinstalling the tablet drivers
Your computer thinks of your pen display as two devices:
a pen tablet (aka a screenless tablet) without a display
a monitor
The tablet driver is talking to the pen tablet. So reinstalling the driver is likely not going to do anything about this problem.
Your computer's operating system is talking to the display. You need to focus your efforts on why the operating system doesn't think the display in the tablet exists.
Also, while reinstalling tablet drivers can't hurt, reinstalling them multiple times is not going to change anything.
Restart the computer
Sometimes this can trigger detection.
Check that the cables are plugged in all the way
This is a very common mistake.
Ensure the ports are clear of obstruction
Check the ports to ensure that there isn't some lint or other material preventing a secure connection. Material like lint in the port can prevent the cable from working.
Windows > Windows + P
Pressing Windows+P will bring up this menu below.
If multiple displays are detected you should see options like Duplicate or Extend.
Try both Duplicate and Extend to see it it makes a difference.
Windows > built-in display detection
In Display Settings, there is an option to detect a display. Try it.
Windows > Windows + B to reset the graphics driver
Press WINDOWS+B to reset the graphics driver.
MacOS
See: https://support.apple.com/en-tm/guide/mac-help/mchla25b377d/mac
Using NVIDIA Rigorous Display Detection
If your computer is not even detecting the existence of the display, and it has an NVIDIA GPU, the NVIDIA Control Panel has a feature called Rigorous Display Detection which can help.
Open the NVIDIA Control Panel
Navigate to Display > Set up multiple displays > Select the displays you want to use
Click on My display is not shown
This will launch the Detect Missing Display dialog
Click Rigorous Display Detection
Use Intel Graphics Command Center to detect your display
If your computer is a laptop or similar device that has an embedded Intel GPU, on Windows you can use the Intel Graphics Command Center app to potentially detect additional displays.
You can download the Intel Graphics Command Center from the Microsoft Store.
Use another port of the same type
Suppose you are using an HDMI port, there may be multiple HDMI ports on your computer. Try the other ones.
Use another port of a different type
For example, if you are using HDMI, try DisplayPort instead.
Check if the pen display can get a signal from another device
See if the display can be detected by another computer or even any device that can send a display signal such as a DVD player or an XBOX.
If this works, it tells you that the pen display and cables work correctly and the problem has something to do with your computer.
Depowering the device
Some people suggest doing this:
UNPLUG the pen display from POWER
hold the power button down
while continuing to hold the power button down, attach the pen display to power, and continue holding down the power for a few seconds.
Firmware updates
Check with your manufacturer if there are any firmware updates.
If all else fails
Contact support!
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