Strange issue with sound

stricky

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Nov 17, 2012
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Hello, I have a very strange issue with my Dell Inspiron 7720 and I've seen this forum as the place to get some help, if possible.

So, the issue.
If I use my laptop without the charger plugged in, everything is fine.

But when I plug the charger in, and make a sound (switch between folders, play a music, etc) the speaker starts buzzing and making strange noise (music is playing though and the speaker is working). If I disable the sound codec in Device manager, I get no sound ofcourse, but there is no noise, even with the charger in.

I had the same issues on Ubuntu, as well as Windows 7 Ultimate. I know the chances are minimal, but I'm hoping It's a software issue I could somehow fix, as I really need the laptop and it's working, although this issue isn't quite easy to ignore. And yes, I have a valid warranty, as the laptop is quite new, but not having it for 1-2 weeks would make my life and work quite a lot harder.

Also, if I don't yet take it back, could it mess up something else?


Thanks in advance,
stricky
 

stricky

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Nov 17, 2012
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Yes, I do. But when I pull the headphones out, the noise goes off, until I make a new sound.
 

kingnoobe

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While I'm not sure the cause. If it's still under warranty I would take it back asap.

While it might be a software issue if I had to guess I'd say more of hardware issue with everything you said.

And if it is a hardware issue i'd say it's a short some where that when you plug in the charger causes the feedback to occur when ever the speaker is supposed to make a noise.

I'm not tech expert by any means, but I sure wouldn't chance it. Even if it's a software thing it's not your problem to fix it. Make them do it even if it's a bit of a hassle. It's better then ending up paying out of your pocket.
 

stricky

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Nov 17, 2012
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Yes it does, even without the battery.


I'm not trying to chance it, but the fact is, I need my laptop as I'm away midweek due to college, and I don't have a pc there...
And the fact is the, laptop works, when I charge it up, I can use it normally on battery, or when plugged in, I can use it normally, but without sound.
 

szaboaz

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Dec 9, 2011
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stricky

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Nov 17, 2012
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While I'm not sure that would help it, as it seems like, when a sound is done, no matter if played or not, the speaker starts buzzing.

I'm a lil afraid of it causing damage to something else though.

I appreciate your help and ideas, thank you szaboaz.
 

szaboaz

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Dec 9, 2011
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No problem.

If you use the USB thingy, you can disable the onboard audio (because it's basically an USB sound card, totally independent of the onboard one).
 
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