columbus teacher
Great news of progress even though more to go.
You probably did not have the Folder Option Show Hidden Files, Folders, and Drives active so that you could see the complete path cited. But sounds like great team work between you and your son with the troubleshooting.
If you have not already, think about doing a ccleaner run through (regular cleaner and registry cleaner parts) to get rid of leftovers from incomplete installs and reinstalls. I mention that for informational and non promotional reasons. I have used that program in a computer maintenance program for some time and no horror stories related to using it. I use the free version.
CCleaner - PC Optimization and Cleaning - Free Download
and more information on its links
Please let us know if you need any suggestions for it use.
Thanks for the updates. Please do not hesitate to ask questions and ask for clarification.
ATR