I had a bit of a drama this morning.
I resumed my edsktop PC and discovered there was no internet. First I tried with my phone, and after realizing the stupidity of that, I grabbed my tablet that has no LTE. It was fine.
Then I went through a slew of typical steps, reset adapter, disable/reenable device, reboot both modem and wifi router, restart PC, even check BIOS, different cable, nothing worked, it just kept saying "cable not plugged in". I grabbed my work laptop which has an ethernet port. It worked fine with the same cable.
At this point I concluded that ethernet died on my MB or maybe some dust somewhere, what else could it be. MB and the whole PC are only ~3 months old, so quite dissapointing.
As my coffee was getting cold, I enabled wifi which my MB fortunately has, and since I was already restarting, I unpaused Win updates and let it update while I went to watch video. Soon after, video froze for a few seconds, I was like "what now", and then realized that ethernet "got fixed" during a Windows Update install, and it's been working fine now.
What the effing F? How did it get so borked that nothing was helping for an hour and a half, and just letting update fixed it, so must've been a SW problem.
And if my PC had no wifi, how would I have fixed it at all. Maybe a usb-c to ethernet adapter would work, but I would have to go buy it somewhere. While I'm glad it's no HW problem, I'm still pissed at this. 😡
I suppose there's a slight possibility that it was fixed by a fan blowing off dust from the wrong place and it just happened while update was installing, but it's too much of a coincidence.