Using a compressor to use a hopper for surfacing a wall, power in that part of house went out,no noticeable breakers off did however turn all off then back on to make sure, I checked main switch to whole house turned it off then on also, still no power to that section, plugged into a different section of house and same thing happened again. What could possibly be the problem?

A loose connection at any one of the receptcles, most likely.

Usually at the last working outlet on the circuit.