WhiteTea wrote:
I have some outlets and a light switch that have stopped working in
one room.

None of the breakers are tripped.

All I can think of is to shut off and then back on one breaker at a
time to isolate which one controls the non-functioning outlets and
switch.
....

If they're not working and the breaker isn't tripped, how will that
isolate anything? There will be no change. You can isolate all other
circuits and perhaps guess which one feeds the one from that, but that's
all...

The symptom is one of a loose connection from the last feed point that
is live on the circuit feeding the faulty boxes. It may be at the first
box that is not working or the last one that is.

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