09-24-2017 09:20 AM
I just purchased the system in the title and after installing the drivers from Lenovo support page I noticed everytime I wanted to connect to my 5Ghz WiFi the adapter was disabled.
I have an Archer C2 750Mbps router with two antennas 2.4 Ghz and 5Ghz.
I tried installing newer drivers with 3rd party software, reseting the connection, nothing worked.
The 5Ghz worked on my iPhone 6 but not on the laptop.
A friend came at my place with a different Lenovo system and he tried connecting to the 5Ghz band and he had the same problem. So I figured that it's something with the router.
I quickly searched for an updated firmware for the router and that solved the problem.
I just put this here in case some of you guys have the same combo - Archer C2 + Lenovo with Qualcomm Atheros QCA61x4A WiFi card.