Hi, I bought the Sapphire 390 used and it arrived today. The seller said it was not posting in the description but that was "blended" in between the specs and I was dumb enough to miss that. Now it's here and no post, no fans spinning. The led on the bios switch lights up but nothing else on the PCB is warming up. I tried the hair dryer method, vbios switch, thermal paste reapplication and cleaning the PCB with isopropyl alcohol. I have a multimeter and two working systems where I can test the GPU. Could someone give me troubleshooting tips or am I screwed?