I've had my computer for a few days now and this started happening - every bootup. The lower line forms and goes across the screen, ending in the top pattern (I can provide a video) - it all takes a few secs. FW/BIOS up-to-date according to support assist. I've also had a case of fuzzy-ness when connected to my dell 27" inch USB-C (thunderbolt) monitor which didn't go away until I rebooted. I'm getting nervous that something is going bad.

Flicker on Bootup