Quote: Originally Posted by frobru
I keep getting two unknown usb devices but there are no usb device connected.
If truly you have nothing at all plugged-in to your PC's USB ports, does your PC have a built-in card reader? Any other built-in that is USB related? If yes, then I would look for updated drivers for whatever reader/gizmo you may have.
If not, well, please explain what you mean by unknown devices "popping up"--I don't know what you are seeing specifically. Screenshot(s)?
Apart from what these "pop-ups" are that are annoying you, I might've said to simply ignore the entries in DM if the PC is otherwise working properly.
P.S. It occurs to me that "of course" you have USB devices. Unless yours is an ancient PC you have a USB mouse or USB keyboard. Maybe a USB webcam? If mouse or keyboard, does it have any special features e.g. multimedia buttons? Acer PCs will typically have some sort of ancillary software associated with these features e.g. Dritek Launch Manager or some such...