The "Cannot display this video mode" error is often encountered when attempting to use an analog input, such as a VGA cable, to connect a device to a display. This error typically indicates that the display is unable to process the video signal being sent by the device, either because the signal is not compatible with the display's capabilities or because the display is not properly configured to accept the signal.
To resolve this error, you can try the following solutions:
Check the display's manual or specifications to ensure that it is compatible with the video signal being sent by the device. If the display does not support the signal format or resolution, you may need to use a different cable or adapter to connect the device to the display.
Adjust the display's settings to match the video signal being sent by the device. This may involve changing the display's resolution, refresh rate, or other settings to match the capabilities of the device.
If the display is connected to a computer, try adjusting the display settings in the operating system. This may involve changing the display's resolution or refresh rate in the operating system's display settings, or adjusting the settings for the video card or graphics driver.
If the error persists, try restarting the device and the display, as well as any intermediate devices (such as a splitter or switch) that are being used to connect them.
If the error continues to occur, there may be a hardware issue with the device, the display, or the cables being used to connect them. In this case, you may need to consult the manufacturer's support resources for further assistance.
Keep in mind that these solutions may vary depending on the specific devices and configuration being used. It is always a good idea to refer to the documentation for the device and the display, as well as any intermediate devices, for detailed instructions and further information.