When I turn on the monitor it scans the HDMI port for some time and says 'no signal' and then turns off.
This is a 1920x1080 monitor and I've switched my laptop to 1920x1080. Then connected my monitor to the box using an HDMI cable. I purchased a j5create USB Type-C Multi-Adapter (JCA374) which supports 4k HDMI (DisplayPort Alt Mode Compatible. Nothing I've tried will detect the screen. I'm trying to connect an external monitor. I just purchased an HP Envy 13-ad1xx (from Costco):
