The computer is in dead state the next morning after I switched its Windows power plan to high performance. In order to unlock power plan options, I disabled connected standby via a registry key in HKLM\System\ControlSet001\Control\Power\CsEnabled to 0.
After investigating, I read that this computer doesn't support normal hibernate\wake-up process other than connected standby. I select shut down option in the menu (hibernate option disappeared). It's possible that shut down option in the menu was actually set to sleep/hibernate in power settings by default.
The battery was at 100% before I last turned it off.
The LED power indicator doesn't light on when power supply is connected on either DC or microUsb.
Are there options to fix it other than taking it to a service center