Alright... I've checked the power connector. From top to bottom it has 0V, 3.3V, 0.68V, and 5V. The Da Vinci IC is a bit warm. The USB Female Plug on the board has power voltage 5V and 0V (I couldn't check the data because I am afraid it can make damage).
So there is nothing I can do? (Like re-flashing it, reset it, or something else?)