I have some weird issues with my new Vega 64, everything was working just fine until one day. Pretty much always when I try to boot computer my monitor doesn't detect any signal. PC turns on, keyboard lights up like its supposed to be. But there is no signal on display. After trying many times to boot, you might get lucky and it will boot right into Windows 10 or Bios. I tried reinstalling operating, resetting bios and updating them too. Tried older drivers. Everything. I tested out with GTX 970 and RX 560, and it worked perfectly fine. And yes, I do have good enough PSU for power hungry Vega 64. I tried changing cables, other slots in my motherboard. Also curently using Cooler Master V750 80+ Gold PSU. I can always return Vega 64 back to store but I would rather avoid that, since its hell to get products returned here.