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 ...
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Mouse & keyboard not working in Windows 11 laptop [8 fixes]

Are the mouse and keyboard not working in Windows 11? Try disabling fast startup, scan for malware, update driver, amongst other fixes.