Hello Durga,
Thank you for reaching out to the Microsoft Community and I'll be glad to assist you today.
Based on the screenshot provided, it seems that you are experiencing issues with the Bluetooth where you have to select "View- Hidden items" to find the Bluetooth Section in the Device Manager.
You can try re-installing the Bluetooth Drivers and see if it helps.
a. Right-click your MediaTek Bluetooth Adapter, select Uninstall device, select the Attempt to remove the driver for this device check box, and then select Uninstall.
b. Once uninstalled, restart your PC.
(Windows will automatically re-install the drivers for your PC)
c. Restart and see if you can connect your PC to the Bluetooth devices.
If you are still experiencing issues, type msinfo in the search bar on the taskbar and post a screenshot of the resulting dialog box.
I hope this information helps. If you have any questions, please let me know and I will be happy to help you further.
Best regards,
Gunasekar N