LattePanda 3 Delta Booting Issue - Need Help!

I recently got my hands on a LattePanda 3 Delta.The problem I'm facing is related to booting the LattePanda 3 Delta. When I power it on, I'm not getting any display output on my monitor. The power LED on the board turns on, and it seems like the board is getting power, but nothing appears on the screen. I've tried different HDMI cables and monitors, but the issue persists.