Up Squared Board Does Not Boot, No LED Lights Up


Hi, all.

There are some problem with my board. Just yesterday, my Up Squared Board cannot boot at all suddenly. There is no blue led light turn up when connecting with the power supply given. However, before yesterday, everything went right and sound. I can install OS, do programming stuff and so on just like using a PC. Except for the HDMI and power supply, I did not connect any other stuff to the board since I received this board. So, can anyone help me to solve this problem?

Thank you for your patience and your kindness.