Vaio E series - Cooling Fan noise

Hello, 2 weeks ago I bought Vaio E series. I was very excited that I will have Vaio laptop. It was like my dream wish. According to our standard, we are poor country and the Vaio laptops are extremely expensive. But, Vaio laptops are know for high quallity laptops and great support from Sony. So, I bought it. I am very satisfied with the quality. But I have one problem. The cooling fan is making a lot of noise even the CPU usage its 10 %. I have the latest BIOS version. So, Sony I am expecting from you to release a new BIOS update fixing this issue.. I dont want to start thinking that I pay a lot of money only for the name. With that money I could buy a more powerful machine but I put my trust in Sony. The model number is Model # SVE17122CXB. PS. Don't say that I should go to service center because they can do nothing. I am an IT student and I know how this stuff works. And I dont want the fact that the new laptop will be repaired. So the only solution is BIOS update. Sony, do not make me regret that I have chosen you before other brands.
I am expecting a positive feedback.

t0n1,
Engineering came back saying that fan speed control is not supported on the SVE17 hardware so there is no way on this model to control the fan speed manually. I apologize for suggesting this initially, at the time I did not have your exact model at my desk but instead I had a very similar one (SVE14A)
I also received two SVE17 notebooks and both have extremely quiet fan (especially if CPU usage is very low). Loud fan noise is not a characteristic of this model.
If you feel that the fan on your SVE17 is abnormally loud, then you have two options at this point:
1) You can make a audio/video recording of this fan noise and post it for me to review; after that i can try to give you more suggestions or let you know if this is in fact normal or not. At this time you do not mention that your computer is shutting off, so the unit is not overheating.
2) Or you can consider service. (I realize you initially refused service in your original post, but sometimes some new thermal sheets or re-seating of the heat-sink can address these issues.

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Hi, I put also ubuntu on my notebook, but...
It's looks my laptop in not supported
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Cooling fan is making irritating noise

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Cooling fan makes noise n laptop freezes

hi,
i got a satellite -215 S4747
after i start my cooling fan starts making some noise as if its struggling to rotate, n within few minutes laptop freezez,,
i got it checked der was no dust or anything found on the fan..
pls help.

Is your model A215-S4747? Support site here
If there is no dirt clogging the heat sink fins, and none in the fan blades, then it may be the fan itself is/has failed. replace fan or attempt to relube existing fan. search the internet on how to restore a fan by relubing. I think replace would be better, and what you may ultimately have to do anyway.
L305-S5955, T9300 Intel Core 2 Duo, 4GB RAM, 60GB SSD, Win 7 Ultimate 64-bit

T530: Unbearable fan noise

Probably similar to this thread, the T530 I recently received has fan noise issues. I've invested considerable time in solving this, but found that a solution can be achieved with reasonable effort only by Lenovo:
Introduction:
Most ThinkPad models do not provide the operating system (or the user) the ability to set the fan speed directly (e.g. in rounds per minute) or in a fine-grained way (e.g. as a percentage of maximum speed). Instead, there are "fan speed levels", usually 9 levels (level 0 through level 7 as well as the level "disengaged"). For each level, a particular fan speed is defined and the Embedded Controller tries to achieve this particular fan speed by measuring the fan speed and adjusting the electrical properties of the fan (e.g. voltage or pulse length or something like this).
The fan noise problem:
Every time the internal temperature sensor reaches 50 °C or so, the fan starts with about 1900 rounds/minute and then quickly goes to about 2737 rounds/minute, where it is loud. Then it takes about 20 seconds, the temperature drops to 45 °C, then the fan is switched off. Then, after maybe other 30 seconds, the cycle repeats and the fan is switched on again, ...
There are major problems with this behaviour, because:
The fan is not running continously, but pulsating.
The fan is running at level 1 at a much higher speed than needed, creating unnecessary noise.
I have measured the individual fan speeds for individual fan speed levels:
The fan speeds at different levels are as follows:
Level 0: 0 rounds/minute
Level 1: 2737 rounds/minute
Level 2: 2944 rounds/minute
Level 3: 3033 rounds/minute
Level 4: 3074 rounds/minute
Level 5: 3597 rounds/minute
Level 6: 3773 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution draft:
A minimum solution to the problem above would be introducing another fan speed level between 0 rounds/minute and 2737 rounds/minute, with about 1900 rounds/minute. The reason this makes a difference is that there is a fundamental difference between laminar flow and turbulent flow, where the laminar flow makes nearly no noise and the turbulent flow makes a lot of noise. (Whether an airflow is laminar or turbulent is easiest influencable by affecting its speed.)
As you can see on the observed mapping from fan speed level to fan speed, level 6 and level 7 map to the same speed.
Thus, no particular fan speed would be lost if the mapping would be changed to the following:
Level 0: 0 rounds/minute
Level 1: 1900 rounds/minute
Level 2: 2737 rounds/minute
Level 3: 2944 rounds/minute
Level 4: 3033 rounds/minute
Level 5: 3074 rounds/minute
Level 6: 3597 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution implementation by user is impossible:
The problem, however, is that, while a user can decide which fan speed level should be active at a particular time, the user cannot decide which fan speed should actually be achieved for a particular level. Thus, the user can either decide to have 0 rounds/minute (which is not particularly sustainable, because the equipment becomes hotter and hotter) or to have 2737 rounds/minute (which is not particularly sustainable either, because both the user and other people arund the user's Lenovo computer are distracted from work).
The mapping from fan speed level to fan speed is actually stored in the Embedded Controller Programm ("ECP"). This Embedded Controller Programm is freely changeable or configurable by the user. Only Lenovo has the source code to this Embedded Controller Programm, and actually only Lenovo may know how to disassemble such a binary Embedded Controller Program in case the user wanted to change it. Thus, even advanced users cannot fix this problem by fixing it where it should be fixed.
It should be noted that, because fan speed is a long lasting issue at Lenovo, a third party has been even developed an after-market hardware solution: TPFC. However, this solution probably voids the warranty, and it work arounds the problem at the wrong place, and it costs time and money and effort to actually install it.
Only Lenovo can fix this problem:
How Lenovo should fix the problem
Thus, this is my call to Lenovo to fix this problem (at least for the T530 series, but probably W530, T430 are also affected). Ideally, the solution should be as follows:
Change the Embdedded Controller Program such that the mapping from fan speed level to fan speed is as follows:
Level 0: 0 rounds/minute (no noise level)
Level 1: 1500 rounds/minute (low noise level, sweet spot)
Level 2: 1700 rounds/minute (low noise level, sweet spot)
Level 3: 1900 rounds/minute (low noise level, sweet spot)
Level 4: 2100 rounds/minute (some noise level)
Level 5: 2600 rounds/minute (high noise level)
Level 6: 3100 rounds/minute (high noise level)
Level 7: 3773 rounds/minute (high noise level)
Level disengaged: 4754 rounds/minute (high noise level)
The reasons for this fan speed design are as follows:
The "sweet spot" where both the fan will run most of the time and where the user would not complain is between 1500 rounds/minute and 2100 rounds/minute. If the fan needs to be faster to keep the system cooled, then the user is likely to run the system with considerable load to CPU or GPU. In this case, there is no option to reduce the fan speed, but also in this case, the user probably accepts the fan noise for the computing power delivered.
The "sweet spot" in terms of CPU load is where the users do not accept fan noise while actually generating only minute CPU load (e.g. during web browsing or writing documents, where the CPU and the GPU is mostly idle). For many users, this is their normal working state (e.g. working in a quiet office, a very quiet library, a quiet bedroom, a quiet boardroom, ...). These scenarios are where Lenovo ThinkPads currently fail to deliver, unnecessarily
The "sweet spot" needs higher resolution (more fan levels allocated to these fan speeds), because slightly different load patterns may make it necessary to go from one level to the next higher level, but then the next level still should be bearable. Conversely, the higher levels (e.g. from 2600 rounds/minute on) do not need such a high resolution, because for most of the users, these levels will be only attained rarely anyway, and then they are accepting the noise.
Currently, there is no fan speed level at the sweet spot. With the proposed fix, there would be 3 fan speed levels at the sweet spot, with a neighbouring fan speed level (2100 rounds/minute) still being bearable when considering the performance delivered.
There is no fan speed level below 1500 rounds/minute. This is ok, because the fan is nearly inaudible at this speed anyway, and below a certain speed, there is a risk (depending on the fan) for the fan to actually not rotate at all (e.g. due to friction).
How much time and effort would Lenovo need for fixing the problem:
The Lenovo engineer responsible for the Embedded Controller Program of the T530 should need less than one day to change the source code of the Embedded Controller Program and to recompile it. The engineer may need one additional day to test this program (e.g. for different types of fans), and there may be a need for an additional day to release the update to the BIOS and ECP. All in all, Lenovo should not need more than 3 engineer-days (maybe worth 1800 USD) to fix the problem.
Why Lenovo should fix the problem:
Probably the whole current T series (T530,T520,T430,T420) as well as the current W series (W530,W520) fails the users in any of these scenarios (among others):
User working in a quiet office.
User working in a quiet library.
User working in a quiet bedroom.
User working in a quiet boardroom.
Thus, the Lenovo T series is currently not usable for many business users and almost all students. This problem should cost millions of USD of revenue, while fixing it would cost it maybe 1800 USD.
Incidental remark: Lenovo subsidiary can do better:
Lenovo has bought the majority of the Germany consumer electronics company Medion. Medion currently offers a consumer level notebook "E7222" for 499€ including German VAT. Despite of this low price, this notebook delivers very good fan control (that is: the notebook is nearly silent when the CPU is near-idle). (However, being consumer-grade, it does not offer a docking-station or a FullHD screen or WWAN.)
What will I personally do:
Some weeks ago, I had a powerful W530. I returned it due to fan noise for cash refund. Now I have the T530 (Serial number: R9RRF26) which has exactly the same problem. The deadline until I can legally request a cash refund runs until 2012-09-07. I hereby ask Lenovo:
To fix the problem and release an ECP or BIOS update until 2012-09-06 (it is doable, see above) or
if the problem cannot be fixed in this time (e.g. due to bureaucracy): provide me with a written statement (e.g. e-mail or forum post is sufficient) that my legal cash refund deadline (German law: §355 BGB) will be voluntarily extended by Lenovo (to some date Lenovo thinks it needs to fix the problem).
If none of the above happens, I will have to return the T530 as well. This is the 2nd chance Lenovo has gotten from me, there will be no 3rd chance. I would have to turn to Fujitsu (they do have business-class machines with big batteries, FullHD, WWAN) and they probably have better fan control.
Solved!
Go to Solution.

kaawee,
Thank you for the considerable thought that you put into your summation / analysis and proposal for a change.
I don't agree that you are wasting your time as we did make EC changes on the X220 and T420s to change fan behavior (along with several other systems). However, not all customers agree that the changes made the system behave the way they wanted and were completely satisfied (hence some of the dissenting opinions expressed here).
We are interested in feedback on T530, W530, T430 fan concerns and we are investigating. It is possible that a future change might be made, but I cannot say for certain that it will, nor can we commit to making this change within 4 days (2 now remaining) from your original posting.
Best regards,
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
twitter @lenovoforums
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Qosmio X500-Q895S Fan Noise on Right

Qosmio X500-Q895S:
The fan on the right side, above the numeric pad, is making a noise like it is hitting something soft.
Is there a way I can clean the fan or is the fan going bad?
The fan does not make the noise all the time.
The warranty ends on July 26, 2011.
Any suggestions would be appreciated.

Guys;
Definitely Qosmio :x505 800 series has a serious fan quality problem. Somehow TOSHIBA does not want to see this issue and keep ignoring.
All what we can do is to discuss the same issue here endlessly and helplessly? I bought my Qosmio X505 Q896 a year ago. What a surprising!! Coincidence; just after my warranty has expired then cooling fans started to make extreme rattling noise. I crossed my fingers and try to clean the fans using a canned air; offcourse didn’t work, because this is purely related to the quality of fans used on $3K gaming machine.
I sent my machine to the authorised Toshiba service. They confirmed that fan’s bearing is worn out and need to replace. I am pretty sure that all you know removing the defected fans is not a piece of cake and it should be done by a professional technician. And if you are lucky enough service centers could find the right model spare fan for your machine.
Good luck to all of you and my humble suggestion is next time never ever buy a Toshiba

Ask W530 fan noise compare W520 fan noise

I bought a W520 recently, but i can't tolerate the fan noise even 2500 rpm, because i usually work alone late at night.
So...

Loading wrote:
I bought a W520 recently, but i can't tolerate the fan noise even 2500 rpm, because i usually work alone late at night.
So...
Which CPU did you get? The i7-29xx CPU has a larger (and noisier - even at lower rpms - cooling unit) than the 27xx and 28xx.
Thats why I picked the i7-2820.
W520 4270CTO i7-2820QM Quadro2000M 1920x1080 Display 16GB RAM 2x240GB Intel 510 SSDs (RAID 0) - BIOS 1.42 - PCMark7:4,568
Samsung Series 9 15-inch NP900X4C-A03US - PCMark7: 4674

Problems with new Yoga 2 Pro (battery, fan noise, yellow, screen orientation, on-screen keyboard)

I purchased the Yoga Pro 2 on Thursday October 17. I love the computer for so many reasons, (especially since it replaces my 4 year old Compaq that was 6.5lbs!) however, I am also having a few issues with it.
It is the i7/8GB/256GB model from BestBuy. I am experiencing the same yellow issue as is mentioned by many on here. I didn't realize it, though, until reading these forums and then comparing to my old computer and my ipad and iPhone. A little disappointed, though it looks like Lenovo may be working on a solution.
But the real reason I originally came to look at this forum is because of 2 things: my fan and battery.
The fan (on the right side of the keyboard) is always on! I didn't expect this, and am wondering if mine is a lemon or if others are noticing the same thing. It's pretty noticeable, especially in a quiet room. I was showing off my new computer to a friend and the very first thing she said was that it was loud! She was using a MacBook pro, which wasn't making any noise at all.
The second thing is the battery... I am attaching 4 photos all taken within a few minutes of each other. If you cant see them, they are all of the battery meter on my screen. I am listing the time of day (to show how much time passed), percent remaining, and time remaining:
10:04 (88%) 306 hr 15 min
10:05 (88%) 8 hr 48 min
10:09 (86%) 4 hr 54 min
10:29 (81%) 5 hr 12 min
I feel like my computer just cant make up its mind!!
Another issue I had... I turned on my computer to show it to a friend (same friend who said it was noisy) and the screen image wouldn't flip when in any of the modes. This means I showed her the stand mode with an upside down image. Even in tablet mode I couldn't get it to flip. I turned the computer off and then on again, and luckily it decided to work, but it was frustrating, and I hope it's not something that becomes an issue.
Also, when I have the computer in tablet mode, the keyboard automatically pops up when I click somewhere to type... but this doesn't happen in stand mode or tent mode. Is this normal? I would have thought that the keyboard would appear in any of those modes, since the real keyboard is not accessible in any of them. And of course now that I am testing it out while writing this, none of the modes (including tablet) is having the keyboard come on screen. Of course, I know I can always choose the icon on the task bar to bring up the keyboard, but it would be nice if the computer did it automatically since it knows there is no other keyboard accessible in those modes. Is this an issue anybody else has had?
I really do enjoy using this computer, but some of these issues really need to get worked out if I am going to keep it. I'd love to hear if anyone is experiencing anything similar, and if there are any good fixes!

I just got a Lemontine Yoga 2 Pro i5/8GB/256GB from lenovo.com and the silver one from BestBuy in the same configuraiton. The silver one has no issues except for the crazy number of hours remaining on the battery which is fine, doesn't bother me. The fan noise is very quiet, and you can only hear it if you put your ear up to the vents in a quiet room.
Now the Clementine one...It was heating up pretty good. I put my ear to it on many occasions and can hear nothing at all, the fan is either missing LOL or doesn't work. I had an issue where I left the thing on for 4 hours, but sleep is configured after 5 hours. When I tried to use it, it showed me the screen brielfy, then blank. Tried hard reset, called Support, nothing. Support says its dead. Ok, an hour later, it turned on. I'm guessing it was too hot and was in some mode to protect itself, like a smartphone that is left out in the sun for some time, it won't power on till its cooled down.
I'm still in process of trying to get a hold of Lenovo to swap it, but since they no longer sell this configuration, I doubt they'll be able to get me a new one.
The silver one from BestBuy us solid though, love it, best in class in my opinion...actually got it from Future Shop sorry...from Canada, but they're essentially the same store.

Satellite A215-S4757 - Battery life and cooling fan issue

Hello everybody,
I would like to ask a few questions abou my system: first of all, the cooling fan is running in my opinion too often: almost continuously, with brakes of 2-3 seconds. Is this normal?
I have my laptop since august last year and I think it shouldn't be a problem of dust, because it is too "young" for that and I don't live in a "dusty" appartment...
Anyway, I think the "almost allways running fan" problem appeared about 2 months after I purchased the notebook. I have installed "Speedfan" and I see "HD0" temperature is increasing from about 30deg immediately after I start the laptop, to about 39deg after 1 hour.
But the curious thing is that so named "Core" temperature is oscillating from the beginning between 45deg and over 52deg! The fan starts each time the core temperature is rising over 50deg and stops when the temperature reaches 45deg. Is this behaviour normal???
Is the core temperature of 45-50deg normal? I am just using my laptop for Internet browsing, e-mails, etc., no complex 3d games!
The second thing is that the battery life is (and was from the beginning) not spectacular: it lasts max. 1,5 hours with wireless on, but normal use of laptop (not playing dvd's or something like this). Is this normal? If yes, is it because of the amd turion 64x2 processors?
Please help me with some advices / opinions.
P.S. I've bought my Toshiba as I was on trip in USA (NY).
Thank you very much in advance.
Conrad

> I would like to ask a few questions about my system: first of all, the cooling fan is running in my opinion too often: almost continuously, with brakes of 2-3 seconds. Is this normal?
Im an owner of a Satellite A210. Its similar to the A215. The A210 is a European model and the A215 belongs to the US notebook series.
I have noticed the same on my A210 and I think its normal behavior.
> But the curious thing is that so named "Core" temperature is oscillating from the beginning between 45deg and over 52deg! The fan starts each time the core temperature is rising over 50deg and stops when the temperature reaches 45deg. Is this behavior normal???
The CPU temperature of 40-60deg is nothing unusual.
The temperature could arise up to 70-80degrees while playing a game. So dont worry about the temperature.
The cooling modules are controlled by BIOS. The fan table is stored in the BIOS and it contains informations about temperature limits and the cooling usage.
If a certain temperature level was reached the cooling module starts to rotate with a certain speed.
Now I would like to say something about the notebooks battery life time
Generally the battery life time depends on the notebooks usage.
While playing games or watching movies the battery would discharge much faster.
Anyway, your notebook was equipped with high-performance devices and as far as I know the Vista was preinstalled on this series. Both factors (high performance devices CPU and GPU) + Vista OS need a lot of battery power. Vista needs more notebook resources as the Win XP and therefore notebooks with Vista OS run shorter on battery as the notebooks with preinstalled Win XP.
Last but not least you have to know that there are different battery models A stronger battery with higher *mA* value would help to run the notebook longer using the battery power.
Hope I could clarify this question.
Bye

Mac Pro 2x2,8 Ghz - Fan Noise - Please help evaluate

Hi Guys,
Since yesterday, I'm the proud owner of a Mac Pro 2x2,8 - Really happy - really nice machine.
However I'm slightly irritated by the posts I've read all over the internet, saying that you can't hear the fans of this machine at all in idle.
As you may have guessed, my box is not silent at all - it is quite quiet compared to other noisy PCs, yes, but no match for the previous iMac 24" which it replaced. You could hardly hear the iMac versus now the Mac Pro... you notice it's there... sitting under the desk - audible.
I realize that fan noise is highly subjective, and I'm using the Mac in a completely silent environment. No AC, no nothing. I've tried the following: removing the hard drive and silencing the graphics card... Upon bootup the Mac would quickly "turbo" it's fans and then go to it's normal state. The loudest fan (which is drowning out all other noise) is the one at the bottom front (CPU?).
Looking at istat, it's in normal parameters (500rpm or so) and doesn't move up or down...
Comparing it to other devices, it would sound like a PS3 when having played 1 hour (fan speed at level 2-3) or an (quiet) xbox in idle mode (dvd not spinning). I know... geeky comparisons
Now, again - not close to my interpretations of "whisper quiet" "can't hear it at all"... "only hear it when I put my ear to the grill" "sounds like it's cooled passively"
Which makes me think that either
a) people out there are deaf /
or
b) my Mac needs a closer look by a genius
Would really appreciate your opinions.
Thanks,
Tom

hey tom,
you might have the same problem i have. I have the 2.8 octo 2008 mac pro. and it used to be whisper quiet. I was amazed. But recently as in the last few weeks the graphics card fan has become audible. I put in an e sata adapter last week and while inside the mac pro I took a look at the fan to see if it was dusty or visibly distressed. Nope. Couldn't find anything wrong with it. So now i'm just dealing with the noise. Which is too bad cause I really really really don't like fan noise. But the air conditioners on most of the time now so I really can't complain about a little fan noise compared to the ac's grumbling.
but i'd like to know if others are having this problem
thanks,
jayson
www.oldchildprojects.com
Message was edited by: woodybrando

RADEON 9800 cooling fan

I have a RADEON 9800 Pro Mac Edition 256MB in my QuickSilver 2002 mounted in the AGP slot. The 9800 cooling fan is very loud (grinding sound) after a cold startup then gets quiet after it warms up. I have looked at third party cooling fans for this RADEON and I have found the Zalman v700cu and the Arctic Cooling ATI Silencer 1, Rev. 2 that seem to be compatible. From the images of these two coolers it looks like the two mounting screws that project out the back of the garphic card are very close to the lower memory slot in my QuickSilver. I don't use the PCI slot next to the AGP slot so I know the coolers will be OK there.
My question is, has anyone actually tried one of these coolers in a QuickSilver 2002 and is there enough clearance between the mounting posts on the cooler and the memory card to prevent them from touching?

ATI fans are notoriously bad (read that as cheap). You will know the fan is going bad when you hear a loud whine or grinding noise after a cold startup or during heavy use. The fan went bad on my 9800 Pro 256 after just 5 months. I had to send the card to ATI for repair - nearly 3 weeks to get the card back. The replacement ATI fan started making noise after another 90 days. I can't see doing this on a regular schedule for the three year warranty term so I replaced the stock fan with an Arctic Cooling ATI Silencer 1, Rev. 2. It's easy to install. So quiet that I can't hear it run and my computer case and power supply fans run slower and with less noise than ever before due to the Arctic fan venting warm air out of the computer.
The Arctic Cooling ATI Silencer 1, Rev. 2 installed perfectly with no modifications and minimal effort. It has a 6 year warranty. I consider this modification the best thing you can do to protect the $250 (or whatever you pay) investment you make with the RADEON card. It's better than waiting for the stock fan to fail and cause your 9800 to melt down. Technically installing the Arctic fan voids the ATI warranty but I believe I could reinstall the old stock fan if the card needs other warranty repairs without anyone noticing the switch was ever made.
So your answers are yes and yes although I never had the monitor problem you describe. The ATI card is a good choice - keep it then download and install the latest drivers from the ATI/AMD web site and do yourself a favor and buy an Arctic Cooling ATI Silencer model for your card. Install it when you start to hear the stock fan going bad. You will be glad you did.
PS - many thanks to FangSuede for his excellent advice given to me.

Extreme fan noise on Retina Macbook Pro "15 2012

My Macbook runs very loud without intensive apps open when I connect it to a Thunderbolt Display for over an hour. I have tested this to great length, it doesn't matter whether it's photoshop, microsoft word or google chrome that's running, it's the fact that it has to power an external display.
I have taken it to Apple Support, however they perform their cooling system tests in 18 degree airconditioning so it's impossible to demonstrate how loud it gets at normal room temperature.
I presented this problem twice within my warranty period, but Apple will simply do their test and deny any problem as the fans barely start up in the cold test environment. They did say that if my laptop overheats and becomes damaged, they will cover the damages because I made the complaint within the warranty period. Now my warranty has expried (I simply didn't have time to waste taking the computer to Apple again within the last two months).
Is there anything I can do to get my laptop fixed? I'm pretty sure the graphics card was faulty to begin with as it cannot take the load of a Thunderbolt Display over an extended period. There are so many documented cases of issues concerning fan noise and overheating with the 2012 rMBP, is Apple not going to do anything about it?!

High CPU usage will make the fans run faster (luder) you can try a SMC reset:
http://support.apple.com/kb/HT3964
Follow directions for a battery that should not remove yourself. Also have the Apple tech make sure you do not have a bad temp sensor.

Cooling fan inconsistent

I've been getting the "Cooling Fan is not operating properly" message for almost a year now, and have been saving up for a replacement fan and heatsink. Starting in about August, the fan started dying quicker, but accompanied by a grinding noise. Today, I observed the grinding sound smoothly transitioning to what I would consider a good fan speed. It happened twice in the span of an hour and hasn't happened since. Is this a problem with the fan or the heat sink unit? And do I even have to replace the full part?

Hi @EventideOne ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue about your HP Pavilion dv6-6b47dx Notebook and issues with the fan. Here is a document on overheating which could possible cause a fan issue or will cause the Notebook to heat up fast.
Here is a link to troubleshoot fan errors.
In the link, it has to update your BIOS, but I recommend to restore the BIOS defaults.You could restore the BIOS with this document selecting the reloading the BIOS default settings which should resolve the fan error message if cleaning does not help.
If that does not help at the end of the document it shows you to do a hardware test.
Please note remove any and all USB devices before troubleshooting. Disconnect all non-essential devices
Hope this helps.
Thanks.
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Qosmio G40 cooling fan issue

Hello every body i'm the international student bought G40. I had it about nearlly half year.
I recentlly found there is problem with my G40,i usually carry my G40 to library or to my friend place,once i took G40 out of the bag and put on desk and power on,CPU fan appears nosiy.
It's kind like frame of cooling fan is changed on the move but it will gone in a very short time, around 2 or 3 mins.
As far as i know fan it's working perfect, just when I take it to somewhere else and put it out and it appears like this.
Anybody found this before,does anybody has idea what's going on with my G40?

Hi, for the first day ...i have writing ,because i dont know if the fan noise have been resolved for all the time!!! It's take near 1 1/2 hour to my TSC technician to do the job! I have waiting him !
I will tell u in the future if the problem come back! At stating, now, the noise is reduced near the normal level for the 2 to 3 first minutes,and to normal level after.
Greetings!

Vaio E series - Cooling Fan noise

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