Thank you for the suggestion. I tried that with the author Thorston E. He looked at logs said they looked strange.
In the meantime, I went to our Friday astronomy club meeting. A friend who is familiar with Firecapture and Sharpcap brought his PC with the programs loaded on his PC. We tried uninstalling and re-installing a driver and then ran the camera on his PC for both programs. The camera was found. I then ran the camera on my PC again. This time it worked as designed. Now I have Firecapture and Sharcap working on my PC with ASI120MC working fine. We thought there might be a USB port problem but after the exercise, it must have had something to do with my not properly installing the driver. My friend suggested it may be a "registry" problem with the camera which was worked out by running it on his PC with the good drivers. I'll take the resolution even if we are not exactly sure what the root cause was. Now out to the observatory for some attempt at Mars, Jupiter, and Saturn.
I appreciate having a forum to voice issues like this.
Thank you,
WEK