After rebooting the computer the USB connected 34980A isn't recognized anymore.
Only when cycling power of the 34980A the instrument shows up again in Windows Device Manager.
Is it a computer issue or a defect 34980A?
Tried changing USB ports and disabling energy saving functions of USB ports. No luck.
Firmware versions 2.43-2.43-2.07-1.05. Instrument was bought in 2015.