No HDMI video after testing OSMC

Hi there,
I just tested the latest OSMC out on a pi that normally run on my TV, after changing back (SD card only) my screen is black, there is a HDMI signal as it turns the tv on, but now only black picture.

Anyone got an idea where to start troubleshooting this ?

Already tested both outputs.
The colorsplash at the start is present.

… I’m clueless…

Check the contents of the SD card to make sure the boot files are there