Neither USB mouse nor USB memory recognized... A record of solving a double trouble on a Dell Vostro

One day, my laptop (Dell Vostro 3520 / Windows 11) suddenly stopped recognizing my USB mouse. It wouldn't recognize USB ...
Ars Technica

BIOS setup: PS/2 vs. USB for mouse/keyboard

I'm setting up a new PC using a Gigabyte GA-M55SLI-S4. While I can navigate the CMOS utility, my Saitek USB keyboard is not allowing me to navigate the BIOS. There is no response to keyboard input ...