Windows 10 booting slower than usual on SSD

[mrwalrus295]

Apologies if this is in the wrong place, I created my account like 5 minutes ago to ask this question. Idk if I'm just dumb or what, but I attempted to do a BIOS update on my mobo recently, and after it did its thing, I got stuck in an infinite loop of Windows Startup Repair. I finally got that worked out, but ever since then I've noticed that right after the ASUS logo appears when I start my computer, the screen goes black and has white underscores that appear and disappear on random places on the screen before beginning to boot Windows shortly after. I don't recall ever seeing this before I janked my PC, and it did lengthen my boot time on my SSD. Albeit by a small amount (still annoying).

If anyone knows what this is, what I did wrong, and how to fix it, please tell me.

Thanks