I have UP board 2GB + 16 GB eMMC memory which worked fine for about 9 months. Recently it stopped working. There is no HDMI output and not booting as headless device. It had Debian on it and not responding to anything either. I have only blue light and I have 5V 10A power adapter. I have no devices connected to it on USB.
I tried some tricks described here like unplugging battery and pushing and holding button for a long time. Nothing changed.
If there is a solution, please let me know ASAP. Otherwise I will return this item.