Uninstalling it is worth a try. I also assume you've rebooted and shutdown/powered-up already. You can also check the Windows Update history to see if anything new came in today.
Otherwise, I recommend checking the BIOS/UEFI settings as well as booting into Linux just to make sure it's not just a Windows thing.
Oh dear. I uninstalled it and rescanned for hardware and now the adaptor doesn't show at all. I rebooted and checked again and its completely gone. The Microsoft virtual Wi-Fi adapters have also disappeared. There's no reference to Wi-Fi or wireless in any of the remaining adapters.Uninstalling it is worth a try. I also assume you've rebooted and shutdown/powered-up already. You can also check the Windows Update history to see if anything new came in today.
Otherwise, I recommend checking the BIOS/UEFI settings as well as booting into Linux just to make sure it's not just a Windows thing.
There were 9 windows updates that installed yesterday after turning the machine on for the first time. Nothing so fare today, and Wi-Fi was working this morning.
Start-up takes all of 5 seconds so booting to BIOS will be a challenge. I've tried a number of function keys and can't seem to catch it.
It looks like there's a "Novo button" that you use to get into BIOS setup.
Thanks, I didn't know that. What a handy little button
Okay, there was only one relevant setting in BIOS. Wireless LAN enabled or disabled and it was set to enabled. I changed it to disabled then back to enabled and saved the BIOS settings and guess what? I have my Wi-Fi back again!! I checked the Device Manager and the Qualcomm Atheros QCA61x4A Wireless Network Adapter shows up (no longer hidden) and is working properly.
This is great news, but I have no clue what happened or whether I have some flaky hardware that spontaneously breaks and repairs itself or indeed whether this is a software issue.
Any suggestions appreciated otherwise thanks sincerely for your help.
Lenovo may have it's own update utility - on Thinkpads it's called Lenovo System Update - but I don't know if the Yoga series has it. If so, you can check to see if there were any updates yesterday?
Otherwise there really isn't much you can do unless it happens again. There's various ways that the WiFi adapter can be disabled by BIOS so there's no way to say if it's a hardware problem or not.
Just to update. The Qualcomm adaptor has continued to require a reset in BIOS each time reboot the device, until this morning that is. It is completely failing to work now and I have no Wi-Fi networking capability. This afternoon I submitted an online returns claim with JB Hi-Fi. 10 minutes later a guy from JB Hi-Fi called me to organise a direct swap with a new device. That's not bad service.
Excellent.
Bought new = it had better work, or else it's the vendor's problem.
You shouldn't have to fix or troubleshoot ANYTHING.
It's just supposed to work. If not, send it back.
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