Thank you for your reply. I greatly appreciate it.

Instruction #4, there is no driver listed in "programs and drivers". I will wait to find out if the driver is necessary from PS Audio. I'll...

Yes, and that's when the comp no longer recognized the dac. I confirmed the usb port and the cable are functioning.

Windows 10 automatic update from the older version to version 1803 that installed on 8/18.

The Stellar Gain Cell Dac/Pre doesn't show up in the device manager, only in the event viewer.

I may...

On the general tab for the Stellar Gain Cell Dac, In the event viewer of the device manager is:

Log Name: Microsoft-Windows-Kernel-PnP/Configuration
Source: ...