Was watching the golf channel today on Microsoft Edge through xfinity (on my Windows 11 Computer) and noticed I only had sound on my left speaker. I could switch to the tennis channel and both speakers were working. I switched to Mozilla Firefox and both speakers work fine on both channels...
I've updated both mine and my wife's desktops and one of my laptops that was compatible. No problems other than updating some BIOS's and some chipset drivers.
It was just something that I tried first. Figured there may have been some new drivers and there were. She has an ASUS Prime B450M-A motherboard. If I remember correctly, I also updated the BIOS.
I was having problems booting and crash problems. Installed the latest drivers (Windows 11) for my ASUS B450 motherboard and have not had problems since. Might give it a try.