I have an 81150A arbitrary function generator. Cycling power takes me to an all white display screen. Physical keys no longer flash green at startup. The behavior is as if the unit were in remote and the screen is disabled. There are no soft buttons. Without those, the published reset to default procedure unavailable.
The unit was fine until I connected it via USB to a new air gapped Windows10 machine that had not yet been configured w/ VISA. From then on, the 81150A has behaved as noted.
How can I hard reset the 81150A?