Windows 10: Bluetooth cannot find devices after OS reboot - Qualcomm Atheros AR3012 Bluetooth 4.0

Problems occured after a complete reinstall of Windows 10 OS

I need to reinstall driver for my internal Bluetooth adaptor on each reboot of the laptop in order for the bluetooth to find my devices for connection. I have tried all versions of drivers from 2014 until the latest 2019 - and it doesnt matter which driver I reinstall after reboot, it works fine with any. But after reboot of the PC no devices can be found and a new reinstall must be done again. The Bluettoh adaptor is Qualcomm Atheros AR3012 Bluetooth 4.0, PC is ASUS Transformer book TX300CA. I have run troubleshooter, restarted Bluetooth services, running systems scans in the Commander and a bunch of other suggestions on this and other forums. Worth mention is also that if the bluetooth device shuts down, during same PC power-on session, in order to find device it must be marked as forgotten in settings and make a full reconnection again. Sometimes the system cannot detect what kind of device it is, meaning a speaker would not transmit any sound. A fix would be higly appreciated.

:)

 

Can't install Qualcomm Atheros AR3012 Bluetooth 4.0 + HS driver

Hi,

I'm used to solve my computer issues on my own, but today I can't.
For some days, I cannot use the Bluetooth anymore on my laptop. Furthermore, the bluetooth driver has disappeared since I tried to reinstall it, and I can't get it back.
Before :



After :



In normal use, I can see in the Device Manager panel the qualcomm driver (AR3012), and the Bluetooth Network card in "Network and Share Center". There is now no more qualcomm driver in device manager, nor BT card available.
I've downloaded the AR3012 driver from there , and I tried to install using both normal method and running in compatibility mode. The installation runs well, asks me to restart the computer, but there is no improvment at all.

I've tried many things... None worked.

So I can't get the AR3012 Bluetooth driver back, and I have no more way to do this.
Of course, I can't get Bluetooth anymore elsewhere, not in settings, nor in Network settings.






I hope you'll be able to help me, I am tired of spending hours on this !

 

Qualcomm Atheros AR3012 Bluetooth not working in Windows 10

Here is how I made the AR3012 working again on Windows 10 20H1.

1. remove AR3012 & its drivers completely from 20H1, later let 20H1 detect it as Generic Bluetooth Radio.

2. download Qualcomm driver v10.0.1.15 from Microsoft Catalog website, install this driver via driver upgrade.

3. after v10.0.1.15 being installed, you might see additional device named in "Bluetooth LE" as the one in the Kirill's figure.

4. try to connect any BT device you couldn't connect after upgrading to 20H1, make sure the AR3012 really WORKS.

5. then download any Qualcomm driver v10.0.3.x (as Kirill mentioned, the newest one is v10.0.3.22, or let Windows Update do it later), upgrade the driver of AR3012 again with this one.

Notice: NEVER uninstall the v10.0.1.15 while/after upgrading to v10.0.3.x, or the AR3012 will fail again after reboot.

Microsoft Generic Bluetooth Driver -> Qualcomm BT driver v10.0.1.15 -> Qualcomm BT driver v10.0.3.x,

if you did followed the steps, your AR3012 should be working as usual, even after reboot.

Qualcomm
Atheros Communications - Bluetooth - 10.0.1.15 (x64)

Qualcomm
Atheros Communications - Bluetooth - 10.0.3.22 (x64)

I guess the "Bluetooth LE" is the critical point of this issue.

(I DID hate the crappy W10...... what's M$ doing now? let users recall how windows unstable in 1990s? )

 

Qualcomm Atheros Communications driver update for Qualcomm Atheros AR3012 Bluetooth 4.0 - Error 0x800f0234

Qualcomm Atheros Communications driver update for Qualcomm Atheros AR3012 Bluetooth 4.0 - Error 0x800f0234

I need help for solved this,please