Show the issue and provide links for us to replicate. What version of Firefox? What do you see here. see screenshot Also try reset to see if it helps.

https://www.123greetings.com/birthday/happy_birthday/happy_birthday_with_a_cute_band_.html .All the sites are like this. Today Microsoft reinstalled win. 11 but I still have no sound. i use Mozilla Firefox. Your screen shot shows reset sound device. mine does not show same.

Yes, the happy birthday song works for me. This is a Windows issue. Try going into device management and update or remove the driver for your sound device. Then reboot windows. https://www.google.com/search?client=firefox-b-1-d&q=device+management+and+update+or+remove+the+driver+for+your+sound+device

Been to the sound driver. I have the best installed was told.

do you think it could be the media player?

I don't have any sound I played sound once on 123greatings now it won't play.

jonzn4suse: are you implying that I remove the sound driver as if it is not necessary? I seen somewhere to back up system first. I am just a beginner on this computer stuff. Microsoft couldn't fix the problem. shall I take it to my local computer shop?

NO! I see it's a dell. Go to these 2 sites to verify drivers are current. https://www.dell.com/support/home/en-us https://www.intel.com/content/www/us/en/support/detect.html

I went to Dell. My computer is out of support. went to Microsoft community. I can't tell you what I did but I have sound.

LMAO!!! Glad to hear(pun intended) that it's working. Mark this as resolved and have a nice day.