Hello @Don Ferguson,
Glad to hear that you can successfully install VS.
"The bootstrapper just disappears", this issue appears at the very beginning when installing VS and generally, it’s caused by some system configurations.
Changing of Windows Registry keys, previous installed Visual Studio/cache files weren’t removed correctly or completely, missing some necessary Windows system files, all may lead to this issue. Cleaning cache(including the Registry keys) or installing VS from scratch(download a new setup file and put it into the root of the C drive and install again) may fix this issue.
Anyway, thanks for sharing the solution here, feel free to contact us if you have any further concerns.
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