kwomoAm i able to leave all the cables except the 24 pin plugged into the P2 and components (no power going into the P2) and just plug the 24 pin cable from my spare PSU into the motherboard to see if it shows the same behaviour when i flick the PSU switch or would this damage things?
bob16314Just to be clear, don't use ANY cables from the EVGA unit with the Coolemaster, and vice-versa..But you probably already knew that.
bob16314Well, let's not be too hasty in condemning any hardware yet without trying a few things first.1. Make sure the Mobo BIOS is up-to-date with the latest from your mobo page at Gigabyte, I see there's 5 updates for an X570 Aorus Master since initial release.2. Enable ErP Mode in the BIOS -> Settings section.3. Contact Gigabyte Support and see what they say (but my crystal ball tells me they'll say the PSUs you tried are bad).
kwomo My next plan is to take the loop apart and test the motherboard out of the case with nothing plugged in/installed other than the 24 pin cable.