The fact that you have a speaker icon, no x and left/right clicking on the speaker icon does nothing is odd, you would normally have no speaker icon either, most odd.
Have you reinstalled the drivers for the motherboard since reinstalling Windows 10 Pro and starting with the chipset drivers first.
Download then run Speccy (free) and post the resultant url for us, details here, this will provide us with information about your computer hardware + any software that you have installed that may explain the present issue/s.
To publish a Speccy profile to the Web:
- In Speccy, click File, and then click Publish Snapshot.
- In the Publish Snapshot dialog box, click Yes to enable Speccy to proceed.
- Speccy publishes the profile and displays a second Publish Snapshot. You can open the URL in your default browser, copy it to the clipboard, or close the dialog box.
You are welcome btw 