This is a mystery. On this laptop of my friend there was a corrupted SSD (many bad block and read errors in windows event log) so I decided it needs a new disk drive. I am trying to install Windows 10 on it, but it has a few devices without driver installed and there is just no wifi device at all! On the previous system the network devices also got corrupted and stopped working (system is configuring classes code 56)
But on the new system on new drive there is only Realtek PCIe GbE Family controller and this Qualcomm Atheros QCA9377 is not listed there at all! I tried installing all windows updates but there seems to be nothing related to wifi.
I have tried installing driver from Acer, but there is 6 different versions and I don't know which one it is! But it seems none of them works and this Qualcomm is a built-in Microsoft driver anyway and should be installed automatically!