My windows only work sometimes. I will start rolling them down and then sometimes they will just stop and wont roll back up or down. They are like clicking when they go up and down and just plain out wont sometimes roll down.

 

Both windows or just one? Does it matter which switch you use to roll the windows up or down? Next time it does it, try holding the window switch in whatever direction you want and give the door a good slam. If it starts rolling, you may have a bad window motor.