Qualcomm Atheros AR3012 Bluetooth not working in Windows 10

I had been trying to solve it for over 6 hours and all the steps you mentioned have been done. 

Apologies if my response upset you.

May I ask why you rated my post unhelpful before you could have possibly performed single step? This affects my standing here negatively for trying my hardest to help you, providing absolutely everything possible to fix your Bluetooth Headset using steps I've collected from thousands of similar cases I have handled successfully in forums.

Did you want my help? Did you see that I asked for you to wait to rate my post, and that I would keep helping until the problem is solved?  If I release the post now no one else here will help you because they will inherit the bad rating on the thread.

Hi DM. I'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator, here to help you.

I will give you everything that's working for others with known issues with Bluetooth headsets:

First HEADSET Troubleshooting:

First try the steps here:

https://www.maketecheasier.com/fix-headphones-n...

https://www.windowscentral.com/setting-your-hea...

https://www.lifewire.com/fix-headphones-not-wor...

https://www.thewindowsclub.com/headphones-not-w...

https://merabheja.com/fix-no-speakers-or-headph...

https://troubleshooter.xyz/wiki/fix-headphones-...

Go to Settings > Devices > Autoplay to look for the device and change the default behavior in it's Dropdown Menu.

Right click Volume icon in System Tray at right end of task bar, Open Sounds Settings, in dropdown menus at top make sure Headphones are selected and Connected for both Playback and Recording Default Devices.

If not again right click Volume icon in System Tray to choose Troubleshoot sound problems.

See all ways (including manufacturer-specific) to re-enable the "Which device did you plug in" popup which can solve headset issues:

https://windowsreport.com/you-just-plugged-unpl... (avoid ad links)

https://h30434.www3.hp.com/t5/Notebook-Audio/En...

https://forums.tomshardware.com/threads/how-do-...

https://www.dell.com/community/Windows-10/How-g...

https://answers.microsoft.com/en-us/windows/for...

Go to the Device Manager reached by right clicking the Start button, choose Sound controller device, on Driver tab choose Roll back or Uninstall, restart PC using keyboard to Ctrl Alt Del, on blue screen tab to Power Icon in bottom right, press Enter, arrow down to Restart, press Enter to restart to reinstall the driver.

Do the same for the headset device and/or it's microphone.

Update the Sound driver from the PC or Device maker's Support downloads web page. While there also check that the Chipset, BIOS, Display, USB, Network and all other drivers are the most current.

Sometimes it helps to unpair or disconnect all other Bluetooth devices from the PC in Bluetooth settings, then try again to connect the headset.

BLUETOOTH Troubleshooting:

See Fixes here:

https://support.microsoft.com/en-us/help/14169/...

http://superuser.com/questions/823894/how-to-ma...

Try the Bluetooth troubleshooter at Settings > Update & Security > Troubleshoot.

Try turning off Fast Startup at Settings > System > Power & Sleep > Additional Power Settings > Choose what Power buttons do > Change settings that are unavailable > uncheck Fast Startup.

Try Updating the Bluetooth driver from the PC maker's Support Downloads webpage for your exact model. Install it even if it's the same or newer than the one in Device Manager reached by right clicking the Start button.

Right click Start button to access Device Manager, locate Bluetooth device (if necessary from View tab Show Hidden Devices), on Driver tab see if Roll Back is available, if not try Update Driver, first automatically, then Browse, then Let Me Pick to try all previously installed Drivers.

If these fail try to Uninstall the Driver, restart PC to reinstall.

Then try pairing again, if necessary run the Bluetooth Troubleshooter again.

If you think the BT adapter has failed, you can replace it easily with a USB nano adapter like this one: https://www.amazon.com/ZEXMTE-Bluetooth-Receive...

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If this was caused by Windows Updates then you can check which were installed at Settings>Update & Security>Windows Update under Installed Updates, then uninstall them from the link there, and hide with the Hide Updates tool downloaded from here: http://download.microsoft.com/download/f/2/2/f2...

You can also use System Restore to get before the problem began, then check for Updates with the Hide Update tool and hide them: http://home.bt.com/tech-gadgets/computing/how-t...

Go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...

Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files. Then continue with the other steps to go over your install most thoroughly.

If nothing else helps you can run a Repair Install by installing the Media Creation Tool and choosing from it to Upgrade Now. This reinstalls Windows in about an hour while saving your files, apps and most settings, solves many problems while also bringing it up to the latest version 1909 which you need anyway and by the most stable method. http://windows.microsoft.com/en-us/windows-10/m...

I hope this helps. Feel free to ask back any questions and keep me posted. If you'll wait to rate whether my post helped you, I will keep working with you until it's resolved.

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Have been trying to connect my bluetooth headphones to my samsung computer but it wont recognise it in bluetooth devices. 

Have tried everything.

Help!!!