Very loud fan sound after sleep when Ram is upgraded.

Recently I have upgrade the Ram memory from 1Gb to 5Gb with (2x2GB) FB-DIMM DDR2 667MHz from Ondamatica. Memory works perfectly, hardware tests were OK and i didn't notice any issue except one: after sleep, fans start to spin faster and faster (seems like a vacuum) to what I supose Is the fastest speed they support, during arround a minute or 45 seconds. That generates an intense noise but happens only when awake afer sleep, not when restarting.
I've done almost everything: reset pvram, reset SMC, change memory slots... And the issue only stops when I remove the new two Ram modules.
I've read about it in some forums, but no one solved it. ¿Any suggestion before I return the Ram to the store?. Could be a software problem?.

It will or can happen but you can reduce it somewhat maybe using SmcFanControl (2.1.3.1 - wwww.macupdate.com ) to keep the fans above default by 200 rpm. And run Hardware Monitor to monitor temps as well. They may be running much warmer than they could/should/ought to.
1GB and your system was on starvation express! ouch. 4GB is more of a normal minimum even. 4 x 1GB is nice balanced setup. 2GB DIMMs might be warmer, run 70C perhaps. And they use about 15W each.

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Very loud fan sound, can't get video, system still running...help?

I can't seem to find an answer to this anywhere here or throughout google. Can't find a similar problem.
We have a G4 tower here at work that we run FileMaker server on. It pretty much just sits there and we all connect to it remotely and use the FileMaker on our own machines. It's usually not even touched unless Filemaker needs to be restarted or something along those lines. It shares a monitor with another system so its not usually even connected to a monitor.
Well - today there is a loud fan noise coming from it that we havent heard before. So we went to hook up the monitor and can't get any video. It was fine in the past week or so because we have been on it with the monitor.
FileMaker must still be running fine because we can still connect...for now...but we can't load up a screen to properly shut down, or run the backup or anything to safely turn the machine off. I am not sure which OS is currently installed because I can't get to that info.
Our guess is that the video card died, and that is the video card fan spinning...but if that were the case, would the software running still be fine like it is?
Any help would be greatly appreciated. Our tech guy can't make it out until tomorrow morning and we're afraid to have to wait that long...
Thanks in advance!

G4 tower covers a lot of G4s; it would help to have more specific model information. I think some of the later ones (not my DP800 QS) had software controlled fans. It's possible part of the operating system has crashed and the fan is automatically going into full speed to automatically prevent overheating. The rest of the OS may still be running and explaining why you can get to your files. I'm not sure about the video though. Perhaps somebody else has something more constructive but with that kind of thing I can't help but feel you'll just have to switch off the machine and restart it.
Message was edited by: Limnos

Anyone encounter loud fan sound upon power up?

Hi,
When I power up my iMac, I encountered a very loud fan sound in the background that I had never encountered before.
This happens despite turning off and powering up again.
Any idea what's happening? And how to remedy the situation?
Regards.

I would recommend downloading and running the popular, useful and FREE "iStat Pro" to see what the actual temperatures of your computer's inner components are. Then post the data here for us to see and comment. You'll find it here:
http://islayer.com/apps/istatpro/
Hope this helps

G4 not starting up, black screen, noisy fan, chimes OK then nothing, after a few mins very loud fan!

Anyone else had this? On start up chimes as normal but screen refuses to come on. Have swapped monitors and same happens on the newer one. G4 was making noises before last week with very loud fan cutting in from time to time. Got lots of work on that computer! Typical, not all backed up! Is it the logic board? How much does that cost to sort out?
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Hello, it's going to be tough to find anybody to work on G4s these days, Apple doesn't.
Have you blown the dust out lately?
Does the Video card have a fan on it? Does the fan spin freely?
If worse comes to worse, you can pull the drives & get the info off of them with one of something like these...
http://eshop.macsales.com/item/NewerTech/U3NVSPATA/

OMG !! MY MacBook Air i7 run hot and very high fan sound?

my MacBook Air i7 run hot and very high fan sound?
am really very sad i buy it from usa store !! and am now in ukraine ! we dont have support or tech !
please help me
i7
4Gb ddr3
256 Gb !
when i open like game age of empire 3 !! my prosser be very very hot !! like 90% my fan be like 6599 !!!!!! and very high sound !
my os is lion and the last one !! and updates !!

no ! not just with game when i open like safari ! with skype ! and email !! i have sound fan ? and prosser very very hot !! over numver 123 !!
and i put it in very good plece !! and put it on the cold wooden table
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What is causing the very Loud Fan noise everytime I use the computer? What is causing the Heat as well? Please help

Please Help!
My computer has been making very LOUD fan noises. I know this cant be normal. How can I fix this issue?
This has been going on for a while now. As soon as I turn on the computer....the noise starts.

Go check out Activity Monitor on your Mac. It will show you which programs are running, and how heavy their use of your CPU is.
When mine does this, for some reason, I have a bunch of "Managed Clients" running at once. I use Act. Mon. to shut them down, and my Mac runs normally.

Very loud fan upon starting imac. Does anyone know how to fix?

My iMac has a VERY LOUD fan that turns on during start up and does not stoop. I tried to shut down and start up again. I also tried to unplug the machine overnight. Still happening.
Anyone have a solution?

This is a part of the larger MacBook Pro connectivity issue. There are several related threads dealing with the MBP's networking problems. If your unit is suffering from this type of difficulty, good luck ... (or a long ethernet cable)
(PS Everybody please make noise on this one so apple comes up with a solution.)
< Edited by Host >

Mac is making loud fan sound and running slow

Recently upgraded to lion, computer has been shutting itself down and now has loud fan sound while running slow

computer has been shutting itself down
Try Resetting the System Management Controller (SMC)

Not waking up after sleep when i close the lid of my mac book pro.

Not waking up after sleep when i close the lid of my mac book pro.

Starwin,
Try an SMC reset:
http://support.apple.com/kb/HT3964
Follow the directions that apply to you battery you should not remove yourself, or battery you can remove.
Best

Retina MacBook Pro fan very loud and usb mouse disconnecting when restarting the computer

2 days ago, I got a brand new retina MacBook Pro 13 inch with the specs 2.8 GhZ i7, 8 gigs of ram and 512gb ssd. It should definitely be functioning properly since it's a really expensive computer, but I already noticed a few problems that I hope you can help me with.
So first of all, when I play World of Warcraft, the fan seems to go up to 6000rpm and is very loud. I checked the activity monitor and it says WoW is using about 60% CPU, so it shouldn't have to be that loud. I also installed smcfancontrol, but it doesn't seem to lower the speed of the fan.
I ran an apple diagnostics test and it couldn't find any problems, and I also tried resetting my smc, but the fan is still going very loud.
And the second problem I have is, that when I have my mouse usb connected to my Mac, and I restart it, it can't detect the mouse anymore. So I'd have to pull out the usb plug and put it back in everytime I turn on my computer. isn't it supposed to automatically connect to my mouse when it's already plugged in?

Matt,
Try reading this, then go to the section on Resetting the SMC for a Macbook Pro with a battery you should not remove.
http://support.apple.com/kb/HT3964

Very loud fan after suspend mode

Hi,
i installed the current arch version on my sony vaio laptop.
when i close my laptop the machine goes into suspend mode. when i open the laptop, after 3 seconds or so the fan starts. Very very loud.
I had the same issue under ubuntu. after some googling i found some forum entries about a bug within the kernel.
the output of sensors shows me that everything has no critical temperature.
Has anyone same experience with noisy fan after suspend mode?
Thanks
Marko

It will or can happen but you can reduce it somewhat maybe using SmcFanControl (2.1.3.1 - wwww.macupdate.com ) to keep the fans above default by 200 rpm. And run Hardware Monitor to monitor temps as well. They may be running much warmer than they could/should/ought to.
1GB and your system was on starvation express! ouch. 4GB is more of a normal minimum even. 4 x 1GB is nice balanced setup. 2GB DIMMs might be warmer, run 70C perhaps. And they use about 15W each.

Mac Pro loud fan noise after 2-3 hours

Hi. I bought a Mac Pro quad 2,66 with 5 Gb ram for about a year ago. Everything works well, but after 2-3 hours the Exhaust and CPU fan starts to raise and when checking iStat it stays at about 3000 rmp for Exhaust and CPU. The noise is bad...This happens even if the Mac is not in use (any programs running) The temperature inside the Mac is low - about 30 degrees (Celcius) and the fans do not slow down until i restart the Mac. I have tried the Reset of the SMC. There is no difference after resetting the SMC....
Any suggestions??

I have been dealing with a Mac Pro for the past 6 months in my sound studio having a constant vacuum from the fan. I assumed this was normal and a purchasing oversight I made. It was far from silent, infact it was so loud it sounded (on recordings) like a car was constantly in the room idling. Very annoying.
I took apart the mac pro thinking there would be maybe dust (as people suggested) in my video card - as that appeared to be where the sound was coming from. I removed the card, and there wasn't really a build up of dust.
I did however put the card back into a slot (it was on the bottom slot closest to the ram - maybe it couldn't breath?) and turned it back on and for the first time since October 08 I have the computer I paid for and not an oversized noise box.
So there is obviously something dodgy about this ATI card Apple. Its actually really quite annoying and dealing with a nuscense noise for 6 months on a computer you drop thousands and thousands for is just ********.

Very loud fan (or other part?) noise in MacBook Pro

Greetings! My fan (I assume) has recently started making a very loud, horrible noise that sounds like a piece of plastic stuck in the spokes of a bike. It's driving me crazy and making me a burden to be around me when I'm working...which is always. Please help! I'd greatly appreciate it.

Perform a SMC reset:
http://support.apple.com/kb/ht3964
If there is no change, open the MBP and examine it. Look for dirt an debris, and if found, clean it out. You will need a #00 Phillips driver.
If still no success it may be that the fan is faulty and should be replaced. Make an appointment at an Apple store genius bar for a free and definitive diagnosis. It is not an expensive repair.
Ciao.

Keyboard creating loud fan noise after coffee spill

After a coffee spill my keyboard has been creating my fans to run very loudly. The temp. is still pretty normal at 40C. When I have the computer on and disconnect the keyboard, the fans return to normal. I've tried cleaning everything inside and removing the fans and putting them back in. Is there anything else I can do? Thank you.

Go to the Apple Store after you have made an appointment with the Genius bar. Liquids are the kiss of death to keyboards. Sorry to give the bad news.
Ciao.

Brand new U500 has a very loud fan

I received this brand new U500 (customized on Toshiba.com) about 10 days ago - everything works great (love the back-lit keyboard) - but the fan noise is a little louder than what I'm used to. I had a 6-yr old Dell XPS with a quieter fan than this brand new Toshiba machine. Basically if I'm standing 20-30 feet away from the laptop I can hear the fan, and one can wonder if this comes from a refrigerator or a vacuum cleaner working in the background.
Has anyone had a similar experience - is this fan noise something I should just learn to accept or do you think I should do something before the computer comes out of warranty? I really would hate to have to return a brand new computer, but at the same time I think fan issues only get more numerous when a computer gets older.
Just for info, the machine is Satellite U500-ST6322, CORE 2 DUO P7450 2.1GHZ, 4GB RAM, DVD Slot load.
Thanks a lot.

Hi and welcome to the  forums.
you wrote
I've read that if I installed OSX 10.4 then the fan would run quieter.
Is this the case?
No, that wouldn't make a difference. eMacs are famous for their very noisy fans.
Some say they were originally intended as turbine impellers for Boeing, but were rejected as too large. So Apple picked them up, and modified them for use in the eMac.
eMacs were made to be workhorses in classrooms and their robust design includes that heavy duty fan, which does impose itself quite loudly.
Some people have installed a means to introduce resistance to the fan circuit to lower the voltage and hence the fan speed, in an attempt to quieten it down.
Whilst this practice seems to work, personally I would be concerned about that causing overheating as during summer things can get very hot here, though perhaps would be less concerned if living in the UK.

Very loud fan sound after sleep when Ram is upgraded.

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