Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm running Win7 on a Dell.

I have sound working to headphones on vlc but no sound when on Vimeo or YouTube. Before a system reinstall by a professional due to a virus I would be prompted to acknowledge that I had plugged in my headphones and to close speakers and all was good. Sound in Control Panel doesn't show headphones and Realtec HD Audio Manager in Control Panel doesn't open.

share|improve this question
I'd bet $20 that this is no virus. To be sure, can you tell us what your device manager says about your sound hardware (don't know WTF I mean? Look here: It'll be under the group 'Sound, video and game controllers'. If it doesn't tell you anything, is their a big yellow icon next to something else? – krowe Aug 14 '13 at 20:14

Check your volume control settings for Firefox and Flash. Make sure volume is not down or muted. From your notification bar, click volume control -> Mixer.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.