you opened “msconfig”, right ?.. I remember , strange as it is, within this ‘dialog’ was nahimic also not listed in my case. Easier for a first test would be to open “services” instead and in case you find nahimic, just disable it. I removed these “stuff” in meanwhile manually completly from my pc and so I can not show you a current screenshot… but I found an older image 
( note: if you follow the link and the discussion, there is also an image about how you find “services” )
Another possible idea to test whether your ctd is caused from your sound-drivers can be to stop the “windows audio service” ( also within “services” ) . In this way you disable whole sound and if in the test-case then msfs will start fine, there is high chance that issue comes from audio.
Otherwise we need to think about other reasons… e.g. it may have somewhat todo with the refund and possible stored cloud data.. then we have to clean this.
And have you found the “windows event log” message ? ( quick howto )