Because without information, there is no knowledge.
Search for the information about your card and drivers, then go to the aircrack site and learn about how the suite works (injection, association, type of attacks). That info will be useful for you from now on.
Once done, come here, tell us what you have done, what you believe about where the problems might be, and I'll try to help you.
Or you may decide to wait, someone might see your thread and hold your hand.



