Heh. I've built a bunch of systems over the years (including updating and moving motherboards around), and I'm always nervous when I power it up the first time.

Especially my latest, when I updated my main rig to a Ryzen 7/32 GB ECC/250 GB NVMe setup. About $1000 worth of new hardware, and the POST delay nearly gave me a heart attack. I shouldn't have worried, though, it worked on the first boot. wipes sweat from brow

CPU cooler installation always seems to be the worst part of it, and there just doesn't seem to be a way around that, since lots of force is needed to squash the cooler down and insure good contact. Still, I like the screw-down setup on the Ryzen far better than the older spring-clip designs, or the spring-loaded pegs on Intel coolers.