Went on vacation a couple years ago, unplugged the pc.. but didn't unhook the internet cable.. got home, Modem was dead and PC would start, but no video, just black screen.. tried a different card, tried hooking the video to the board, still black, fans running, no beeps etc... unhooked it, set it aside... decided to fix it a couple weeks ago. hooked it up... now, I get no fans nothing.. Motherboard LCD's light... tried different power supply, same thing... Ordered a motherboard.. same it had in it. Asus Prime Z270-A Put the new board in, put a new vid card in... still the same thing. swapped memory and power supply from my gaming PC.. still just a black screen. tried turning power on at the board, nothing... swapped in new cables. Pulled the power supply, memory and vid card from my gaming PC and put in.. still nothing.. I'm lost. The only thing I havent tried is the processor.. (I7-7700K) but I think the fans etc would at least turn on if the processor was smoked? Please tell me if thats wrong... looking for ideas... Thanks!