MXQ 4K can't reboot

Hi. I have issue with MXQ 4K tv box. Logo stuck and can’t do reboot. I do everything like on video tutorial but when i press reboot button with toothpick and plug in power adapter there is no power. If i plug in power adapter without keep reboot button everything work ok and stuck on logo. What to do and how to fix this? Thanks.

Do you think we know all devices available on market?
Maybe some more information is required. Not sure if you have a Amlogic SoC at all.