This will open your router configuration window. When asked for username and password, enter admin as password XXXXX leave username blank. Click OK In the Configuration page, click on Wireless tab. Then in there, enable Wireless and setup Security. Save settings and try connecting via Wireless
Please let me know if that didn't work, so we can continue troubleshooting.
It seems like it is hardware related. Connect your PC to Wireless, then on your PC, press Windows and R keys. This will open Run box. Type cmd and press enter.Then type ipconfig /renew and press enter. Did that work ?Forgot to ask do you have this problem with all of your devices ?