Dell Inspiron 16 (7610) Static, Buzzing

Question

Has anyone else experienced a very quiet, but noticeable staticky / buzzing sound coming from their 7610?
This is the first time I've noticed it, in a very quiet room I heard an annoying pulsating, staticky sound coming from the laptop. It sounds almost like a cell phone interference with speakers, a high frequency pulsating sound. It almost sounds like a spinner hard drive writing data, but very very quiet. We know these laptops don't come with spinner hard drives.

Anyways, it is most audible if you put your ear underneath the vent on the right side (Numpad side). The buzzing changes tones when I touch the touchpad. It's more noticeable and louder running on battery power. With the AC adapter plugged in, the sound is significantly less pronounced and barely audible but still present.

I'm not sure if this sound was there before or after performing the grounding wire soldering for the touchpad related issues. Touchpad is fixed, but maybe I'm being paranoid with the sounds. Can't hear it when the fans kick in, of course. Can someone else listen to their laptop and see if they hear anything also?

filbert · Accepted Answer

It might be coil whine.

Essentially, coil whine is the audible effect of components vibrating when under high load / high power. It can sound like a whine or a rattle or a vibration. This happens with many components, but often it's not loud enough for us to hear or at a frequency that we don't hear well.

These two pages have more explanation and some tips to reduce the effect:

Unfortunately, you may not be able to eliminate it to your satisfaction. Much depends upon how you use your computer, the acoustic qualities of your room, other ambient noise, etc.

I once had a Netgear router whose coil whine was particularly annoying to me. I found that the volume varied among units of the identical model. I tried two or three other units of the same model in the store, and found one that I couldn't hear. Even though they were the same model, same components and power supply, two or three of them were loudly annoying to me, but the last one was inaudible.

AdrianG001 · Answer

Resolution Go to Device Manager. Expand Sound, Video and Game controllers. Right click RealtekAudio and click Update driver. Click Browse my computer for driver software. Click Let me pick from a list of available drivers on my computer. Select High Definition Audio Device and then Next to complete.

Streetmagus · Answer

It's not something coming from the speakers. It's just sound from the laptop electronics I guess, is louder than what I'm used to.

uuuuser · Answer

I bought Dell Inspiron 16 Plus 7620 and received it 3 days ago. I also have exact same noise issue with this brand new laptop. All the description you put here matches exactly what I am hearing from my laptop. I initially thought that it may come from the speaker due to some electrical interferences just like cell phone interference. So, I muted my speaker to elimnate it from possible source. But, the noice stays here. The buzzing noise gets louder when I launch a new application and when the system comes out of idle state to active state (i.e. when the computer is idle with monitor is turnned off, if I touch the keyboard to log in, I hear lounder noise), These are two occasions that I am currently aware of

What was your solution for this issue?

uuuuser · Answer

Hello Filbert,

Thank you for your great sharing. it helps me a lot and I can confirm that I am experiencing this coid whine issue with my new laptop. I also watches a few Youtube videos to learn that there is no clear way of resolving this issue.

It is very disappointing to have this coid whine with this great laptop that I spent quite a lot of money on.

Thank you so much for your sharing with me.

aure01999 · Answer

I finaly find a solution for this problème for Dell inspiron 7620-312 :

go to your bios (Press F12 during the DELL logo a the start)

Go to Bios settings> performance and turn OFF :

- c-states control

- enable adaptative c-states for graphics

click "apply changes and exit.

restart your PC.

the noise come back only under intense cpu use.

if you whant even less noise, turn off all the "turbo" or "boost" option in the performance menu.

delldario · Answer

thanks this solved my same troubles, I had noises like the old hdd working with medium noises that made me crazy! I have an Inspiron 16 Plus RTX3060 (5 days of life) and I hope this post can help others.

I spoke with the support that made me loose house with tests while googling I found this brillant solution.

Indeed, I have all updates and also Dell support sent me link for individual updates but nothing changed.

The question is: disabling the boosts, how much performance I loose???? I'll run some benchmark asap to find out.......................... but anyway this is INSANE!

VERY disappointed.

xcite102 · Answer

Exact same issue for me with my brand new 7620. Thanks for the fix @aure01999 but I am reluctant to implement the changes to the bios due to possible negative effect on the performance.

@delldariodid you run the before and after benchmark tests to see if there's any significant impact?

Thanks

LockedKD · Answer

Hey delldario   Did you see any decrease in performance or any other problems after switching. Also is the noise back or has it been gone since.   Thanks

aure01999 · Answer

@LockedKD​ hi, i dont run a benchmark after that but it seems to have no impact for every day use and 3D use neither ( wysiwyg cast, autocad, capture se...) i dont know for gaming...

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Dell Inspiron 16 (7610) Static, Buzzing

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