Ok so just to try to narrow down the issue I have a couple questions that may seem random but I am trying to see if you are having a similar situation I had with my desktop pc.
# Are you using windows 10 and more specifically, did you reinstall windows recently?
# Does your pc require you logging in prior to booting to desktop?
As you seemingly did alot of troubleshooting prior to posting I don’t want to give you anything else unless it may fix it so your answers to the above would help.