AC Question.outside supporter is not running? The indoor fan is running, and I'm getting cool nouns inside....

The indoor fan is running, and I'm getting cool nouns inside. But, the outside fan on the part is not running. I checked the circuit breaker, and that's not the problem. What's the next step? Could the motor be adjectives out on the fan? What will it cost to fix? Also, can this problem be cause by not changing the atmosphere filter regularly?
Answers:    What i would do is there is a switch above the follower blade flip it to the reverse side then save working it is possible that the motor is burnt out if so i recomend lately buying a new hanger-on seeing that now contained by days they are only 60 dollars and the moter would run you more or less 40.
Make sure there is voltage outside ,after check and see if the fan is hot to the touch or if the blades are frozen if check the capacitor which most likely will be the problem and yes a dirty filter will restrict airflow cause a multitude of problems.