My Lattepanda v1(2gb) doesn't boot

Yesterday I got my new LP, and today I tried to install ubuntu on my LP.
https://github.com/LattePandaTeam/LattePanda-Win10-Software ← I used this bios and 
https://docs.lattepanda.com/content/1st_edition/os/#linux-ubuntu-1604-lts  ← used this iso

I successfully installed ubuntu and rebooted, but after rebooting, nothing showed on my monitor.

I tried to unplug the power and plugged in one more time, but it didn't work

When I restart by plugging the power, the blue light blinks, and after blinking it became normal and the red light just stays on.

Is there somebody who can help me? (T_T)

(My first language is not English so my writing can include some errors.)