Hi
@James ,
Thank you for your reply. Yesterday, I spent another 8 hours to solve this issue. However, somehow it went worse than ever. I will try to answer your questions below and give an update on the current situation.
After your reply, I tried to remove BT drivers from the device manager. When I checked the device manager, there were like 30-35 items in the BT driver list. My phone and earbuds were shown 3 times. There were about 20 x Bluetooth LE Generic Attribute Service items. I tried to remove each of them by uninstalling option. But, it wasn't working at all. Whatever I removed was installed again automatically when it was refreshed after the uninstallation of another driver. So, I rebooted my laptop in safe mode and uninstalled everything related to the BT drivers. Then, I use the regedit to delete every device shown under the "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Devices" folder. I think it was a mistake but I will come to that later.
I rebooted my pc in normal mode and checked the BT drivers. It was OK at first glance. The unnecessary drivers were gone and all the devices were removed from the BT list. I downloaded Intel Driver and Support Assistant. It was showing a new update for the BT Drivers. I downloaded and installed them and restarted my pc again.
The fun part started just after this. I first tried to add my Asus Pen device. It just connected automatically and installed drivers (it can be seen under the BT Drivers in the device manager); However, it isn't shown as a known device under the settings / Bluetooth & Devices section. Similarly, I tried to connect my BT earbuds to the PC. First, It wasn't found in the scan list. But, I tried to use Airplane mode on and off a couple of times and PC managed to catch it in the list. I connected to the earbuds. It is working perfectly but it isn't shown as a known device in the settings. Strangely, even I disconnect the connection by putting them into the case, and then I open the case again to see if it connects automatically. It is. It shows as Bluetooth not connected to any device both in settings and in the system tray; however, my pen and earbuds are connecting and working perfectly fine.
So, I finally tried to connect my phone again. For some reason, it couldn't be found in the scan list whatever I tried. However, if I unpair the pc on my phone and try to re-pair it with my pc, the code appears on the laptop and when I accept the code both on the pc and phone, pc opens a window and says it is paired. However, after waiting a 30 sec time, my phone says it couldn't connect to the pc. By the way, the dynamic lock is still working whenever I restart the pc. My phone is actually connecting to the pc, because if I remove the connection by changing room, the screen locks. But, it doesn't work again until I re-pair the phone and pc again or restart the pc again.
After all this progress, I am about the lose my mind. I checked the BT drivers again. And there are like 30 items on the list again. Please see the attached photos. (My phone name is Golgefendi and the model of my phone is Samsung S22 Ultra.) (I don't know who has that TV but the only item that my pc can find is the TV. I live in the apartment.)
Update: Windows Phone Link still works but I realise something odd. It couldn't connect to phone for calls. I can see messages, apps and photos. See the image below.