User A had a usb printer. User A quit, User B starts using User A's pc
(don't ask why). User C grabs the usb printer for their pc before User
B starts using the pc. User B ends up using an lpt printer.

Whenever the pc boots up now, it detects a new printer on usb, changes
the port on the installed printer to be usb instead of lpt.

Printer's been deleted & reinstalled (overwriting the drivers), then
works until the next reboot.