The first thing that I would try is to open your network control panel, manage wireless networks and delete your network from the list. Restart and allow it to be re-detected, then enter the passkey and check the connect automatically box.
The next move is to change your wireless adapter MAC using this free app that has directions for use on the site HERE
. It saves your old address if you wish to revert for any reason.
If neither of those fix it, open an elevated command prompt box (right click run as admin) and type in the following then hit the enter key and copy/paste the results in the text file created on the C drive to this thread: ipconfig /all>c:\ipconfig.txt