When buying a new computer part to fix coil whine, try looking at places that have a good return policy so that, if after running a benchmark on the hardware the high-pitched noise is too much of a bother or comes on too easily, you can just return it and look elsewhere. Adjusting the brightness stopped the high pitch noise on my 5+ year old Samsung SyncMaster 943. Interestingly, I had to increase the brightness and not reduce it. Reducing the brightness made the noise much louder. Thanks for your post. Usually, the buzzing and grinding sounds our laptops tend to make are to do with the CPU fan. So today, we’re going to talk about how to fix your laptop fan and prevent overheating once and for all. When it comes right down to it, making sure that your laptop isn’t making any noise is also going to improve its performance. Mar 04, 2018. Feb 23, 2010.
This seems to be a real problem with some LCD Monitors, especially the entry level TN panels like the popular Dell models (one of which I’m in front of right now).
![Msi laptop high pitched noise Msi laptop high pitched noise](https://i.ytimg.com/vi/VsXvh6ThXRI/maxresdefault.jpg)
In my case, the monitor was fine for the first two months. But then started making a buzzing noise… 1) when on, 2) worse when in power stand-by mode, and 3) even worse when turned off.
Asus Laptop Making High Pitched Noise
Thanks Dell!
It seems as if the cheap capacitors manufacturers’ use in these LCDs, after a while, start to resonate at a high pitch frequency that is very annoying in a quiet room. I’ve read that some people have fixed this by opening up the monitor and putting epoxy resin around parts … something I was not ready to do.
Adjusting the brightness setting of the LCD managed to fix this problem. Since this changes the power the monitor takes, this also changes the frequency these cheap capacitors resonate at… Sometimes for the better. You’ll have to play around and see what works for you best.
Next time I’m going for a nice non-TN Samsung.
Other reported fixes include changing the refresh rate (switching between 50Hz or 60Hz), and disabling the internal/integrated speakers or setting their volume to zero (they might be on without you knowing).
I’ve been trying to explain to people how the high-pitched noise emitting from my Dell Latitude D820 (which is a great computer) has been driving me crazy! Indeed, after complaining about this noise, most people actually think I have GONE crazy. But, it turns out that it’s actually a known issue. Here’s an article published by Dell:
Personally, I find it quite humorous that Dell blames the problem on Piezoelectricity, and even goes so far as to link to Wikipedia for more information. But, this article led me on the correct path to solving the problem.
Having read the article, I noticed that my Bluetooth device shuts down shortly after my machine boots up. Turns out, it’s because a power saving checkbox was enabled. As a result, the Bluetooth device turns off, and this evidently allows the processor to move into a C3 state, thus causing the high-pitched noise.
Laptop Fan High Pitched Noise
To resolve this, go to your Device Manager, right-click “Dell Wireless 350 Bluetooth Module” (at least, that’s what it’s called on my machine), and select properties. Select the “Power Management” tab, and uncheck the “Allow the computer to turn off this device to save power” checkbox.
Once you’ve done this, the noise will stop!
Best of luck!
[Update]
Since writing this post, Dell has come out with an updated version of the Latitude 820 Bios (version A06). You can get this update here. I haven’t tried it yet, but it’s possible that this Bios update will help!
[Update 2]
I installed version A06 and STILL the high-pitched noise was emitted by the laptop. Fortunately, the steps above still resolve the issue. Young chang piano.
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