UEFI Shell message keeps happening when I power the board

Hello Everyone,

I purchased a LattePanda Delta 3 two months ago and I saved this problem to solve for later.

But now it is time to get to it !

So I have this message : 

"UEFI Interactive Shell v2.2

EDK II

UEFI v2.70 (American Megatrends, 0x00050013)

map : No mapping found.

Press ESC in x seconds to skip startup.nsh or any other key to continue

Shell>"

that pops up almost every time I try to power the board. Then I have to try disconnecting/reconnecting power supply to have windows boot.

I have auto-power-on enabled because I want my project to launch just by powering it.

Have you guys encountered this problem and found a solution ?

Regardless of this issue, for now I find this board absolutely awesome. Great job guys.

Thanks 

Sacha