Window was unable to finad a certificate to log you on to the network

uninstall wireless network adapter from device manager and restart computer

then reinstall wireless adapter drivers

 click on the wireless icon in your taskbar and under Related Tasks, choose Change advanced settings.

Now click on the Wireless Networks tab and select the network in the list at the bottom. Click onProperties once you select the wireless network that is having problems.

Click on the Authentication tab and now uncheck the Enable IEEE 802.1x authentication for this network box. If the box was checked, then that was why you were getting the “unable to find a certificate to log you on to the network” message because Windows is looking for one, but your wireless router is not setup for certificate security.