I just upgraded my 10 year old PC. Replaced MBD, CPU, GPU, RAM and now I have no display and no beeps. I have a ASUS TUF B450M - R5 1600AF, Vengeance LPX 3000mhz ddr4 c15, and Zotac 1650 Super. If I pull everything out including memory, I get a long beep and 2 shorts, signifying its not seeing the memory. but put it back in and no beeps.