I recently changed from i5-6600k to r5 3600 and kept the same graphics card. I install everything and update the bios and it starts working properly. I try to change my cooler and realize I don't have the proper bracket so I change back to the stock cooler. This is when my graphics card stops displaying anything at all from the pcie x16 slot. It does work from the x4 slot but there is a huge performance decrease. Is this a BIOS issue or do you guys have any other ideas?