Hey bro.. is the problem solved? If not... Here's what I did...
So, somehow I found this way of bypassing it.
Only works on laptop.. idk for you desktop people
Go to any browser and play any video on yt.. THIS IS IMPORTANT! it keeps your audio in Minecraft...
If your laptop is plugged in, plug it off..
Then, AND ONLY THEN
Open Minecraft
Do the task manager thing if it got stuck again..
If succeeded, you can turn off that yt video and plug your laptop back in...
it works for me... So I guess you could give it a go...
For the desktop folks, sorry idk
And if this doesn't work.. well at least you tried...