Goodness! We have had multiple issues with computers and internet in the past week.
After an hour of trying multiple ways to fix it, the Tech had me reset the modem (unplug, wait 10 seconds, plug back in, wait another 30 seconds, while it rebooted. And, Voilá! My internet was connected again!
Interesting thing about that. The first thing I (who know little about computers -hence the call) told him was that the System light was out, on the modem.
When I rebooted the modem (after him having me try15 different things), the System light came on & I had an internet connection again.
So, then the Tech proceeds to chastize me that before I call tech support, I should unplug, wait 10 seconds, replug and wait for reboot, on both the modem & router.

I'm sorry, but shouldn't he have told me to try that first ?????

UGH!!! I hate computers! But they
are a necessary evil, in this complex world in which we live.