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Although my sound is working for games it is disabled when I am on the internet.

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The sound is working normally when I first start the computer or play a game. It is not on when I go on line. How do I correct this?

The sound is working normally when I first start the computer or play a game. It is not on when I go on line. How do I correct this?

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Is it same with Internet Explorer?

If Internet Explorer works fine, first update Firefox. Click on Help Menu and select Check for Updates. Repeat this till no other updates are found.

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Internet explorer is not working either.