No fan surge at start up.

I posted this question yesterday, but can't find it, so I hope this isn't a duplicate.
I just replaced my graphics card which was causing all sorts of distortion. The new ATI Radeon 5770 is working fine, but the fans no longer surge at start up. They're running, but I'm concerned that they're not powering up to high at start up as they have ever since I got this Mac. Hope someone can help. Thanks.

system thermal sensors kick in when the internal temperature of the case is too high, which can happen when you put it to sleep or shutdown and before it has time to cool off.
your old setup was misbehaving.
I don't know what you use but use something to monitor temps, fans, and not knowing what you had in there and other details.
2008 and earlier use FBDIMMs. Those run hot, especially older DIMMs, and need to be kept below 75*C to prevent errors, but should be more like 65*C for good health. And going from cold-hot-cold puts stress on electroncs.
Some graphic cards had weak or small fans or poor cooling and of course could be putting heat into the case, or clogging and causing fans to run harder all the time, such as the ATI X1900 found in some pre-2008 systems.
A firmware update for some models in 2007 ADDED better fan behavior to start the fans when the system came out of sleep if the reading was high or in error or null.

Similar Messages

Fan Surging on G71- Laptop

OK, this is weird. My fan surges from high to low. Sometimes it stops for a second and then starts again. Sometimes it will stop for several minutes to an hour and everything will operate normally. Then it will start surging for another hour. Sometimes during the surges performance gets really choppy, eg. moving the mouse pointer will make it jump around.
The inside of the cmoputer is clean.
In BIO setup "Fan Always on" is not checked.
I have not upgraded the BIOS.
I dn't think it's software (operating system) related. When it started doing this about three weeks ago, I was running Linux Mint 14. I then switched to Ubuntu 12.04. Then I reloaded Windows 7. Then I went back to Mint, only version 15.
CLUE: When I was running Windows 7, it never woke up from it's first hiberation. Instead, it gave a message and a blue screen of death saying it shut down dur to processor temperatures. It never ran correctly again under Windows. After loading Linux Mint 15, no issues except for the fan surging.
INFO: HP Model G71-340US
Product VM114UA#ABA
System Board ID 306B Version 21.14
BIOS Version F.20 Release 10/13/2009 Rev 15.32 Fw. Rev. 33.20
BIOS VENDOR Insyde
Any ideas appreciated.

Oh no!
And it's brand new right? So a dusty/clogged fan wouldn't apply here. It's odd that you would have that issue on a Mini as they use a tiny little atom processor, not a super hot i7 or anything like that (Envy Users have a lot of heat issues). Does the laptop feel hot at all? If not it could be a faulty fan, if you just bought it I'm sure you can have that looked at/replaced under warranty.
________________________________________________________________________________________________________ I Love Kudos! If you feel my post has helped you please click the White Kudos! Star just below my name
If you feel my answer has fixed your problem please click 'Mark As Solution' and make it easier for others to find help quickly

Dv7t-6100 Fan surging / vibration Should I Replace? Fan Only? or + Heatsink?

Since yesterday, dv7-6100 fan is surging and / or also vibrating somewhat loudly (like bearing noise or out of balance noise). I blew out dust as much as I could with can of air. It did not change significantly. The surging sound is like when a printer head prints, then zips to another location and prints again, an intermittant "zzzt.....zzzt....zzzt" where the zzzt represents the higher spin noise or vibration. maybe 1/2 second interval.
I have since downgraded the power plan and fan is much quieter, because it's running slower, but still has a slight vibration noise. No surging. There was definitely strong and varying vibration noise before I downgraded power plan.
For the past year, on startup, computer will on occasion have black screen and message something to the effect of "fan not working, will shut down in 10 (15?) seconds..."
I always let it shut down, then start it again and it always starts the second time. I've never noticed the fan not working other than when it just starts with that message, which seems to be once a month or so, to maybe a couple of times a week, not every time.
The surging makes me wonder if I should try to download the driver? Or is the vibration proof enough that the fan needs service (either dust removal, or fan replace).
Is it likely that only dust removal is necessary or should I just order a fan?
Some fans come with heat sink, some without. Which should I order? I don't mind turning a few screws to remove the heat sink before swapping out if replacement of heat sink is not necessary. I just don't understand why some come with heat sink and some without.
HP dv7-6100 product # QB648AV serial [Personal Information Removed]
Thank You!

Hello @nextari,
I have read your post on how the fan on your notebook computer is making an unusual noise, and I would be happy to assist you in this matter!
To decrease the noise being made from the cooling fan, I recommend following this document on Reducing Fan Noise. This should help identify the root of the noise, and help prevent surging / vibrations in the future.
If the problem persists, Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

Macbook Pro Retina 13" fan hiss on start up?

Hi there community. My 13" Retina MBP makes a slight "hiss" noise whenever I turn the machine on or I resume it from sleep. In a quiet environment it is noticable, and I know it comes from the fan starting up. When the machine is up and running though, the only noise I hear from the fan is a regular low-profile noise (about 1000rpm), which is completly normal. Any answers?

I hear a very FAINT noise in my 15" rMBP, when I first got mine thet other day the FAN came on really loud and that's the last time i ever heard the FAN. But this new 2013 rMBP is a 1000 times more quiet than my 2008 MBP. Sometimes I wonder if it's even RUNNING it's so quiet. Apple really did a nice job putting the SSD drive in and although I hate to admit it leaving out the Optical drive made this machine lighter and the quietest machine ever built.

Macbook Air cooling fan surges hugely for minutes at a time.

For the past 3 months now, my MacBook Air, OSX 10.9.3, 2.6 GHz Intel Core i7, 16 GB 1600 MHz DDR3, simply surges to a fever pitch for about 1 minute and then dies back away.
The system could even be in a quiet state running no unusual software, not challenging simulations, nothing.
I have IT staff looking at me saying stuff like...
- "Is your system going to explode?"
or
note realizing that is has a flash ram drive, "your hard drive is done for."
The fan works normally at a low pace from time to time in its normal work. But, simply takes off occassionally, what gives?

If gaming or watching videos
NORMAL
If it rapidly surges while doing the same thing for a long time, RESET THE SMC
RESET SMC
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
if same, then you have a damaged/ defective heat sensor tripping fan.

Presario C700 (C776CA) fan doesn't start

Hi
Recently, my C700 had overheating problem. Like the support told me years ago (2), I removed the battery and the power supply and pushed the power button few seconds. I also spread air in the fan like they told me.
After that, the notebook starts but the fan doesn't : the CPU overheat and the notebook shut down.
I tried waiting some time to see if it changes something : no!
Thanks for the help
TAG

Try to do a BIOS update. Go to www.hp.com , put the unit product no and do a search. Select the operating system and then download and run the latest BIOS available for your system. Make sure there is no accessories connected to the unit except the ac adapter while you are flashing the BIOS. Let the system restart and check if the fan is working or not.
If it still doesnt work, call HP technical support and get the unit servcied.
Although I am an HP employee, I am speaking for myself and not for HP.

I7 iMac - Random CPU fan surges

It's happened three times this month, 2 of them today - my CPU fans will suddenly rev up to 4,000 RPM, and iStatPro will show the CPU temperature as "--". The first time it happened, I was worried that the machine got too hot. The second time, I had just sat down at the computer in the morning... the top of it was hardly even warm.
Both times, after shutting down and rebooting the fans went back to normal, but the computer performed poorly in graphical tasks (gaming) until I did an SMC reset, which brought it back to normal.
Two of the times it happened, I was playing Modern Warfare. The third time, I was watching a Friends DVD. All 3 times, system was 90-99% idle and all other temperatures were moderate. The fact that on one occasion it happened when my computer was still cold from being asleep all night makes me think that it's a false sensor reading that makes the computer think it needs to crank that CPU fan.
I haven't done the recent SMC update, since I never plan on using this computer as a display for another machine... should I install it anyway?
Thanks.
-Nick

4000 rpm is a lot thats not normal, are you doing some heavy processing like rendering video or encoding video, its the only way your cpu start to ask for the sensor to fire up the fan so it could cool down the system. That is normal if your rendering video.
In my case its weird also I am using Ableton live suite 8 to produce music and when I am looping some sound to compose it with some others to match up in sync it uses the cpu but only 10 percent maybe. Here is the thing my computer start to rev up once in a while, when I a doing this, I do notice that maybe its spring and the room temp is higher and there is a chance that the computer would start to heat up. I mean I got this computer in Feb 2 and of coarse it wasn't having this problem but as we head towards summer it is heating up once in a while and the computer fans do fire up.
I am guessing the i7 do have a tic to get hot and once in a while the fans fire up, but its not normal that it does it frequently just idle, it should fire up when the processor is being loaded with processing power, for music production synthesizer running midi notes, video rendering which is a big load for the CPU, etc.

Macbook fans running from start up

My Macbook is about 5 months old and I noticed that since a few weeks ago, when I turn the Mac on, the fans start to run. But the Macbook is not even hot or doing something heavy, like exporting from iMovie. The sound is not loud at all. I downloaded a Dashboard widget about fans and it says the fans are running at "18-20" speed. I'm not sure it has affected the battery life, but it must have.

Hi.....you might want to open Activity Monitor (Utilities folder)....from the first window choose (CPU)....from the top of that window click on the drop down menu and choose (All Processes)...look for a process using double or even triple digit CPU%.....if something is stuck/hung you can quit the process from there...
You might also want to try an SMC reset....
http://support.apple.com/kb/HT3964

IMac fan running loudly, started suddenly yesterday

I've read through the forum and tried resetting the SMC and PRAM. Didn't do anything. Anything else I can try before I make an appointment at the Mac store? I really HATE not having my Mac at home...
History: Had iMac for ten months, never an issue. Yesterday midday my computer fan started running high. I installed the iStatPro widget, got this info, then realized I haven't a clue what this info means:
CPU: 1197
Hard Drive: 5907
Optical: 998
Obviously the Hard Drive fan is running five times the rate of the others, but is that abnormal? How abnormal is it?
The temps run:
HD: 92
CPU A: 95
CPU Heatsink: 97
Airport Card: 131
Ambient: 72
GPU: 108
GPU Diode: 112
GPU Heatsink: 112
Thanks for any info you can give me

Before taking off to the Apple Store try doing a SMC and PRAM reset again following:
1. Turn off your iMac and unplug everything from it for 30 seconds.
2. Plug in the power cord, keyboard and mouse only.
3. Press the power button and immediately hold down the Option, Command, P & R keys until you hear the second gong then release the keys. Your machine will start up normally, then check for the issues you are having.
BTW, if your don't have it already I would suggest getting AppleCare, it extends your telephone and parts and labor warranty to 3 years from the original date of purchase. If you do already have it when you call Apple ask about on-site service, they will provide it (if you ask) assuming you are within 50 miles of a service center.

Fan Surge on Startup -- Normal?

When I start my Mac Pro, after about 3-5 seconds the fans suddenly go full tilt for about a second, and then quickly throttle down to normal speeds.
Is this a common phenomenon?
Clark

Mine does it too but I think that its my X1900XT card not the system fans. It's a little too high pitched for it to be the system fans, IMHO. Is everyone else who's noticing this running the X1900XT?<</div>
Have the X1900 it's under the desk and never have heard the fans except for when booting. I haven't updated the fan bios for fear of breaking a good thing. the only way I know it's on is the soothing heat on my legs when running FCP and STP also have non fined apple approved mem from www.datamem.com with no problems.

Fans slow to start

I have noticed that my fans sound like they are "the little train that could" trying to make it up a steep hill when I wake the computer or start it up fresh.
Aren't there like four fans in this thing?
Anyone else hear this and did you replace the fans? If so, can I buy them at a local computer store? What to buy?
Thanks in advance

I just added 4 gig of ram and the fans started working overtime. In my situation I think that's the reason, since I added high performance ram. I am paying attention to it to see what happens next. I don't think it's going to hurt it, it just doesn't sound good. Any one has a comment?

Satellite L650-16W - Fan doesnt (re)start after standby

Hello i own a Satellite L650-16W and after standby-mode the fan doesnt start again. So the temperature increases untill a reboot is necessary. After the reboot the fan works correctly again. I own this notebook for about 4 month and at the beginning this problem didnt appear.
Ive tried to update the bios but it seems to be the actual version. And i dont find any options to put the fan manually on again. So maybe anybody has got the same problem or a solution.
Thanks for your help.

Bios reflash is a a little bit tricky procedure and if it goes wrong you will get a black screen. Note, the warranty doesn't cover bios reflash failure. Go to the toshiba driver page:
http://eu.computers.toshiba-europe.com/innovation/download_drivers_bios.jsp and choose the right Bios for your model
If Bios version on toshiba driver page is the same with installed one yoyr lap, download it anyway and run it. Read carefully instructions how to reflash it:
http://forums.computers.toshiba-europe.com/forums/ann.jspa?annID=60
you may get a message while reflashing the current version is already installed....
Anyway, before all, I advise to restore the factory settings to be sure that isn't OS related issue.

MSI R9 290 Gaming intermittent fan stopping issues (starts with a touch).

Hi all
I am currently investigating why my R9 290 twin frozr GPU occasionally only runs one of it's fans.
It is intermittent and is of course noticeable when the temperature hits above 86C. (usually goes to 94C very quickly playing a game).
I have tried some suggestions, feeding each power socket from it's own output from the PSU, which is a single rail Coolermaster V700, so I am not entirely sure how that would help.
This issue is quite recent and I am wondering if it is driver or afterburner related. When a fan is stopped simply touching the hub causes it to start spinning properly, and the temperatures return to normal, this is not ideal as I have to take the side panel off my case and would rather be confident that the fan is running as it should.
There are various threads around the internet and even on these forums on this topic, however not solution has been offered as of yet, other than the most elite users replacing the card's cooling system, which I am not willing to do, as when working correctly the cooling on this card is absolutely fine.
Thanks for reading, and I look forward to your suggestions.
Cheers
Bakerman

Hi hpipiw
I think the fans are actually fine, its definitely looking like a software issue, I didn't see this problem before installing afterburner, and setting a higher min fan speed seems to have cured the issue for now.
I can imagine that a fan thats seizing up might just stop at lower speeds, but I would think it would struggle to start up when touched.
Keeping an eye on it for now, will of course rma if I notice anything bad happening.
Cheers for the comment.

MSI K7T266 Pro2 cpu fan doesn't start

Hello!
I have the mainboard MSI K7T266 Pro2, I have just upgraded my bios to version 3.7. When I start my computer, it stops and beeps to warn me that the cpu fan is'nt running, but when I open the computer to see If the cpu fan is running it does start, so why does is say that the fan doesn't star when it acctually does start?

No....!! There is nothing bad mounted.
The reason for this post of you PC, is that the cooler isn't running fast enough for the BIOS, so your BIOS just wantst to warn you. The easiest way to get rid of it, is to disable the "CPU Fan Detection" in the BIOS, or connect the fan to another plug. That's all there is to it!
sj

MSI 270x Gaming tf - one fan not always start

Hi,
i bought recently MSI 270x gaming and mine problem was high temperatures. I discovered that one of the fan doesnt work (it look like he had too less voltage to start). I touch him gently and he start work fine for few days (shut down pc for night). Sadly yesterday he wont start again on turn pc (it look like turn power up -> both fans start rotate few times, they stop and next they go on little higher rpm - this is moment when one of fans have troubles).
Fan look really fine, doesnt have any resistance to rotate when you touch him, its look more like problem with control from voltage system.
Its possible to change video card bios in way to give more power to fans on start (i think this will solve problem with not starting fan).
Here is mine vbios h.ttp://www.filedropper.com/pitcairn

There have been several issues reported about fans on this card model. Seems a batch of this are simply bad. Contact MSI about it or contact reseller for rma. >>How to contact MSI.<<

No fan surge at start up.

Similar Messages

Maybe you are looking for