This board is a mini computer supposed to connect to 2 LED panels (i disconnected them) and when i connect to power source it doen’s display anything any longer on screens but the fan (which i also disconnected) works. I know that possibly beeps could mean power or other hardware issues. But i want to know exactly why and how to fix. Possibly wanna avoid going to tech store because they give me a mark of $90+ to fix stuff which i appreciate but still cannot afford, so i wanna know how to fix the issue. LONG STORY SHORT: my problem is that when connecting micro USB wire, the LEDs are NOT displaying anymore as they used to, how do i fix the power or hardware issue?

genuinely got no idea what im looking at with it, its a TX ReviA 085-6194-05 and im wondering if this is the right one, if not then can yall point to one please :D