96 ford aerostar power windows dont go up or down?

If the power Windows in your 1996 Ford Aerostar aren't functioning, start by checking the window fuse and circuit breaker, as a blown fuse can prevent operation. Next, inspect the power window switch for any signs of damage or malfunction. If the switch appears fine, examine the wiring and connections to the window motor for any issues. If all else seems normal, the window motor itself may need replacement.