What should be confirmed if there is no video output despite the device being powered on?

When addressing the issue of no video output despite the device being powered on, it is essential to check both device compatibility with the display and ensure that all connections are correctly made.

First, confirming device compatibility with the display is crucial because not all devices are designed to work with every type of display. Certain resolutions, refresh rates, or connection types might be required for the device to function correctly with the display. If there is a mismatch in compatibility, the display may remain blank even though both the device and the display are powered on.

Secondly, verifying that all connections are correctly made is equally important. Loose, faulty, or incorrect connections can easily lead to a lack of video output. This includes checking cables, ports, and ensuring they are securely connected. If any connection is not properly seated or there is damage to the cables or ports, the expected video signal may not be transmitted.

Both these aspects—compatibility and connection integrity—are critical to diagnosing the problem effectively. When both conditions are confirmed, it provides a comprehensive approach to troubleshooting the lack of video output.