hi, i've an udoo x86 advanced, which worked last time i put it away, more than an year ago... today, no sign of signal on monitor... nothing attached, just power and hdmi, tried a keyboard and removed that, too... no ssd or usb or microsd device connected, just the integrated emmc... disconnected battery, same... battery is charged, btw... tried booting keeping pressed the arduino reset button before powering on, nothing tried 3 different monitors and hdmi cables, nothing tried 2 different power supply, which both output the correct voltage, nothing... just green led, fixed, and fan turned on, no signal of any kind... what to do?
It sounds like your BIOS settings might be corrupted or the CMOS battery has failed during storage. Try performing a hard RTC reset by disconnecting the power and the coin-cell battery for at least 20 minutes to clear the NVRAM. If that fails, check if your RAM is seated correctly (if using the Ultra model) or attempt to blind-flash the BIOS via a recovery USB.
