When the Silhouette is powered on, the Silhouette immediately begins to go through cutting motions (starts to cut the same job repeatedly or the blade taps up and down rapidly) prior to any cut job actually being sent.
The issue stops if the USB cord is removed but is repeated without stopping if the unit is powered on and the USB cord is connected to the computer.
This indicates that there is another USB device (such as a printer) that is trying to communicate with the Silhouette.
The following steps may be performed to resolve this concern:
This action will direct the older unit's driver which is no longer present to stop it from trying to take up the USB connection and subsequently stop it from confusing the Silhouette machine.