b350 gaming plus, worked fine for 6 months then one day it didnt work, tried 3 different ram kits and 3 different gpus, tried all 4 ram slots saperately, or 2 or 4 ram configs, different pcie slots, 4 different cpus, it powers on, cpu debug led goes on for a second then goes off, everything is running, but no display.. resetted cmos, tried simple tricks like powering psu off/on quickly, is this fixable or does anyone know what would be wrong with it to try and find someone who can fix it? thank you.