My wifi was connected but it was “limited” and rolling over the wifi icon said there was “No Internet Access”. When I ran the troubleshooting, it said that it “couldn’t identify the problem”. This was on a Windows 8 Dell machine:

I opened device manager

1. Search > Settings > Device Manager
2. Click Network Adapters
3. Find the wireless device (mine was Intel Centrino Wireless) and right-click to open properties.
4. Click Driver tab
5. Click Disable
6. Click Enable