'Windows Cannot Connect' Error message

I have rebooted and reconfigured my sbg900 countless times. Everytime I have done this and tried to connect to my network all that pops up is an Error message. 'Windows Cannot Connect' so, I proceed to diagnose the problem and it is telling me that the wireless association failed because Windows did not receive any response from the wireless router or access point. I know my internet works, because with a USB or Ethernet cord I can connect, but I cannot connect to my Wireless. Any suggestions?