Hello Derek,
Thanks for bringing this to our intention and how you addressed.
Unfortunately, using 7.9M2 is not something which is going to work very long term.
The issue we had with the Start menu disappearing was in 7.9M2 and solved for people who have tried 7.9M3, so it looks you might have encountered another bug somewhere.
May I ask if you could run 7.9M3 one more time and create some log files so I can feed back to the engineering team to investigate?
KB533818: How can I report Windows issues to DisplayLink?
Alban