Note: this is not a request for troubleshooting help.
For the past few years my 10ish year old “smart” TV will maybe once a week or so completely lose the ability to play sound in the Youtube app, and only in the Youtube app. Sound works just fine everywhere else. Bizarrely this is always triggered by an ad and never a video. Restarting the app doesn’t fix it, and neither does clearing the cache. Fortunately doing a full restart of the TV fixes it, it’s just irritating to have to restart because an ad somehow broke the sound.
What technological gremlins haunt you?
Similar here: a boot from power off will ALWAYS mean there’s no network, but a warm boot will always work.
As a workaround, I always hit the reset button two seconds after turning the computer on.
I can tell there’s been a power outage if the computer is on and has no network.