I am using the corsair HX1200i ATX 3.1 power supply, I have also tried using my older HX1200 power supply that I have stored and it does the same thing. I am using the corsair 12VHPWR that came with the power supply, I also purchased 3 different replacements that I used and all the same problem unfortunately. Something I think that is weird that you should note is, whenever I reseat the card whether it’s reseating it into the motherboard or reseating the cable into the GPU, the problem stops on my first boot up. Normally when I finish using my PC, I turn off the PSU from the switch in the back and then turn it back on when I am about to use it, now when I do that the issue comes back but if I don’t switch off the PSU and just restart normally the problem stays away. GPU tweak shows everything is fine and balanced until I restart my power supply. Quite a weird issue. I’ve also used a cable clamp multimeter to measure the amps coming from the cable when the flashing red light happens and noticed it didn’t match what GPU tweak said and the pins were actually perfectly balanced. I am also 100% positive the cable is fully seated into the GPU. Is my GPU’s power detector plus messed up? is it a software issue? Sometimes it works completely fine other times it’s messed up and that’s without me even moving the cable. Not sure if I should exchange/RMA the card or maybe there’s a fix i don’t know about.
