Hi folks, hoping for some insight here, Trying to build up an x570/3700x system and am having a very weird issue with boot up. I currently have only MB/CPU/RAM/NVMe (all new), GPU installed and I am unable to reliably boot to UEFI. Cold booting the system will result in black screen and no boot every other time, all fans (including MB) will run nonstop at this point and the system cannot be shutdown, PWR BTN does nothing even when held down, I have to switch the system off at the PSU. After many hours of troubleshooting I have discovered that switching the DP to the other input on the GPU results in a successful boot to UEFI, system is then completely stable (in UEFI, no Windows or anything else installed at this point). If I shut the system down and attempt to restart I get the same no screen, no boot issue, cannot shutdown, have to switch off at PSU. Switching the DP input back to the original one used then results in a successful boot...?!?!?! This can go on and on. PSU is a Corsair HX620 GPU is an MSI 1070, RAM is new T-Force 3600Mhz 8Pack edition (16GB) NVMe is in slot 1 and is a Samsung 970 Evo 500GB Due to troubleshooting this issue I haven't even changed anything in UEFI from defaults although I did manage to update it to F11. Both PSU and GPU were working fine in the old system. If anyone has any clues what the heck is going on I'd appreciate some insight before I think about RMA.