ac'sbusted

Hey guys, there's some scorching heat right now and this annoying problem recently popped up. It just won't blow any air from the 2 front AC vents. I have no clue what the problem is, and upon finding out, I'd love to know if it's self repairable. My guesses thus far are: actuator problems, filter is dirty. I'd appreciate any help I can get with this asap, the car gets insanely hot due to only the side vents and the front vent ( defroster? one by the windshield ) working.