Car wont start. Voltage regulator?

I went to start my car this morning, and it would not start. when i stuck the key in, the dash lights came on, but when i turned the key, everything went dead. no noise, nothing. pulled the key out, and tried again, same issue. i tried a third time, and when i stuck the key in, no dash lights, no indication there was any life in my car. i immediately tried to jump it, (and i have a brand new battery). after a minute of leaving the other car running, i still had no life in my car.

absolutely nothing works.

I was told today that it might be the voltage regulator?

any suggestions?

[4322558]

no sounds like check cables or posble starter is falty ......ps the year make and modle and eng size would be nice

1991 Camry
2.0L
131k Miles.

at first i thought it might have been the starter, but when i stick the key in now, absolutely nothing happens, no dash lights, no beeping.
it's deader than dead!