I have been trying to trouble shoot a black screen with a new GPU. So, I've been reading a lot on many forums. First of all, I'm kind of a noob. Was tempted to reply on your post because I've read a post on tomshardware with the same problem as yours and I cant remember if he/she managed to find a fix. I tried finding the link to it with out any luck, as the threads were pretty long. Though I'll try looking for it once I'm back home from work. Updating BIOS, switching between the PCIE slots on your motherboard (using the slower *8 instead of *16) or if you have more than one PCIE * 16 slots, were some of the fixes that I remember reading( not sure if the fix was for the exact same problem). I'm currently convinced that my PCIE slot is corrupt/ damaged as my new gtx 1050 ti is giving me the same problem that my old card ( which some one convinced was defective - gtx 650 ti) and a small probability that it might be the power supply. From your tests PCIE slot on the mother board as you tested your card on another board. PSU problem - maybe. I can say more but it's going to be very vague, so I'll try finding that link for you.