Re the printer: sorry, I should have noted that the printer is a network printer and the status of device manager was taken with the affected computer removed from my network. That probably explains the alerts in device manager. Like I said, I wasn’t too worried about that until I get the other more serious problems sorted out. Since the “event” I have not had other devices connected to the network at the same time that the affected computer is on the network. It is quite cumbersome.

I did try to uninstall some of the USB ports, but each time I select one my mouse and keyboard quit working. I then have to reboot and the USB port gets reinstalled. I have tried 2 different ports with the same result. The keyboard and mouse are wireless connected thru a USB KVM switch. My monitors connected thru the same switch continue to work??

I am stumped.