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HOW-TO GEEK BOOKSRead our first book, the HTG Guide to Windows 8, or check our upcoming books. Enter your email below to get exclusive access to our best articles and tips before everybody else. Our electronic devices can occasionally surprise us with unexpected and extremely irritating noises, so finding a solution is a priority. I have a new Dell Inspiron 15 7547 laptop and it makes an annoying high-pitched buzzing sound whenever running on AC power.
As the noise is connected to the load (and thus current consumption), this might be a case of a noisy DC-to-DC converter whose switching frequency falls into the audible range.
It is hard to tell whether it is serious or not, but I would definitely look into replacing the laptop if it is still under warranty as a big shift in DC-to-DC switching frequency can quite often have an impact on the voltages it generates.
Even if it is currently working without problems, you might find some of more sensitive components just dropping dead one-by-one over the long-term.
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Once the unit is removed, carefully remove the two small bolts, washers and nut holding the two halves of the unit together. About Latest Posts ModchopGLR contributor & Land Rover anorakOld enough to know better.
Here is a partial list of everything I have tried to do and abandoned in the last few months- write a short story, draw a kid’s book, start a company, get back into painting, build a Ludo board for my son, get into pottery, start a company (yep, twice), write a cool Android app, write a cool iPhone app, build a website, publish a book, and the list goes on.
I have had a pretty cooperative wife who by now is having a ball watching me embark on these affairs of passing interest.
But what do you do when all the usual ‘suspects’ are not the cause of the problem?

When the CPU is working at full speed, it is silent, but when the workload is lower, the CPU goes into power-saving mode. Amazingly, neither the computer support at our company nor the two engineers DELL sent out to fix the noise could solve my problem.
I assumed it was a dodgy relay or something similar as it sounded very much like a relay energising only very loudly.
In the next picture you’ll see the unit in place with the lower fixing screw arrowed, the upper fixing screw is diagonally opposite this.
Be very careful at this point as the nuts are not captive and will inevitably fall out and lose themselves if you’re not careful. They are a collection of musings on a single topic that I have had over the last few months.
I want to do a lot of things but I am unable to do them because of something that I feel is holding me back. Every time I embarked on one of these things, I believed in it, I believed I could do it, I thought I had the knowledge and the skill but just didn’t execute fully. The buzzing is just as loud as the HDD’s noise, but it never stops and becomes really annoying. I had a quick look but couldn’t find anything obvious so I posed the question on the Discovery II forum, sure enough five minutes later there were a couple of suggestions as to the likely culprit, chief among them was the small fan on the in car temperature sensor (ICTS). If that is the least bit interesting to you and I wouldn’t blame you for it, bail out NOW!. Hopefully now you should a peaceful drive without the persistant buzzing sound of the fan on the ICTS. If you are a thirty-something like me and feeling restless with where things are headed, read ON.
As for the other passing interests (quoting you and not me ), IMO, you are an explorer and have been pretty good at that.

I spent time trying to understand this and I think it is a side effect of the times we live in. I have tried to disconnect myself from technology as much as I can (yes, even when I am surrounded by a ton of them). The cause appears to be over time, dust, fluff and general crud get drawn in by the fan causing it to operate noisily.
Once you’ve removed the two fixing screws take the unit somewhere you can work on it, I chose the footwell, probably not the wisest choice in all honesty! It is hard to explain but I am sure some of you have experienced it, are experiencing it or will probably experience it at some point in your life.
We have access to so much information almost all the time and also access to resources to learn these things. When I look back at the school days in India, all I did was play cricket and then watch TV on DD and hang out with friends and then read Hindu. In all this time, I have been doing perfectly fine at work and have continued to blog at a pretty reasonable frequency.
Essentially I feel it comes down to too much stimulation and so the key is to pick a few things and stick with it for a year or two and then do new things. I think and believe I can and want to do more but hesitate to take a concrete step towards it.

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