Physical installation issues
If the screen never shows the console even during startup, Then it's typically an improperly installed screen,
Important
It is advised follow the manufacturer instructions on how to physically connect the screen and install the proper drivers.
Cable issues
- Check that the cable is inserted properly: it shouldn't be loose, and in the case of ribbon cables like DSI make sure the contacts face the right way
- If the touchscreen is connected via USB, try another port if available, if you are using a HUB try connecting the touch directly without the HUB.
- If the board has more than one HDMI try the other port
Driver issues
Some screens need drivers installed the most common cases are: