Randomly yesterday and today I have had two different locations with an 2-3 year old Dell and a brand new Dell have their keyboard and mouse stop working.
I checked Device Manager and the keyboard and mouse have a yellow exclamation point on them and the properties show "no compatible driver for this device".
I can remove the devices and re-detect, removed the USB controller and reinstalled and also updated USB and chipset drivers and BIOS with no solution?
I also don't see any recent Windows updates that should cause the issue.
Not sure what's going on here.