No POST. Often pink lights and then blue lights show on the ASRock Z390 Extreme4. The fans don't turn on.
As for some history, the first motherboard was replaced (RMA) by ASRock. Since then I have talked with ASRock Technical Support and the replacement motherboard they sent was...
I have tightened the thumbscrews all the way onto the threads of the screws (Hexagon Pillars), which go through the backplate and the mounting bars. The issue is there is about 3/4 of an inch of play with the installation rig, even with the thumbscrews tighten completely, it can move up and down...