A friend of mine contacted me a few nights ago, having issues getting his Surface Pro 3 to connect to his Microsoft Wireless Display Adapter after upgrading the tablet to Windows 10.
Initially, we considered that his Wireless Display Adapter was faulty, so he visited Wal-Mart (of all places) and swapped it with a new one. Same result. The Surface Pro 3 just would not connect to the wireless display network.
The solution was a bit different than the one related to the issues for the HP Spectre x360 that I wrote about recently. The Spectre just needed a driver and BIOS update. After a bit of digging, the solution that was identified really relates to just about any driver-level issue you might experience after a upgrading to Windows 10. In most cases, just uninstalling and allowing Windows 10 to reinstall a driver fixes the issue.
And, that was the case here for the Surface Pro 3.
To apply this fix…
Type Device Manager in Cortana's "Ask Me Anything" area and open Windows 10's Device Manager applet.
In the Device Manager applet, locate the Marvell AVASTAR Wireless-AC Network Controller in the list of drivers, right click on the reference and then choose Uninstall.
Once the uninstall is complete, reboot the Surface Pro 3.
When the Surface Pro 3 reboots, Windows 10 will automatically reinstall the Marvell driver in the background so you can test connecting to the Microsoft Wireless Display Adapter again.
P.S. Have problems with other drivers? You can use this same method to fix most driver-related issues. I had to do this method for fixing a Bluetooth problem on the original Surface Pro tablet during the Windows Insider program.