Electric going out in half of house
You have lost a phase. Your stove, once switched on, is backfeeding through the phase that isn't working. You are looking for a burnt lug or wiring probably in the meter base or panel. If you can't see any burnt or discoloring, you will need to turn off your stove and then check for voltage at the load side of all of your breakers.

 

You're looking for something like this.