If the whole circuit went down suddenly, and you cannot bring it back to life? And know obvious GCFI on the line tripped.
How much do you have plugged on that circuit by the way. Two lamps and a ceiling light or multiple power strips with computers, printers and stuff?
You fried a breaker switch. Or you are over loading it so it trips.
Either way, you need to pull the cover off your service box, yank the suspected failed breaker out. And reach in and tighten all the wires to the main. You may just have a neutral wire loose. Then you have to press the breaker back in place. If it has oodles of things plugged in exceeding the amps on the breaker, I pray it should trip again.
Personally, I would do one of two things in either instance as a DIY self project.
1. Call an electrician.
2. Call an electrician.
Of course all that work for me swim in money, have the personalities of garden slugs, and have been known to give me only bags of wire nuts for Christmas. Mine are not all that expensive and I have never had a project set on fire yet because of them. My fave over the years have been from a union contractor that on the side of the truck, advertises something like we want to get into and fix your shorts.