Steps to solve this Firefox isn't sounding/loading pages/opening/responding.:

• for the sake of sound-Your computer should be restarted. Make sure your sound settings are correct. Check the output device in Firefox. You should update your audio driver. Firefox should be updated. Add-ons in Firefox should be disabled. Reset Firefox to its default settings. Firefox should be reinstalled.
• for the purpose of loading More, then Settings. Select Privacy and Security from the menu. Clear your browsing history . Select All time from the drop-down menu next to 'Time range.' Cookies and site data, as well as cached pictures and files, should be selected. Deselect the other data types.
• Firefox should be reinstalled.
• Restart Firefox.
• Make a new profile in Firefox.
• Other options are available. Examine the browser's internals. Examine your Internet security software for any conflicts.

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