865PE Neo2 north branch fan always running full speed
Core Center does not seem to work. I have the latest version and it is quiet for first 5 minutes, then it gets louder and louder. I have replaced the NB fan once and that seemed to help for a while, but now it is always running at full speed. The fan goes to full speed even when no one is using the computer for 1/2 hour.
1) How to troubleshoot?
2) Are there other fan speed control programs that actually let you control the speed of the fans?
Try SpeedFan. If your mobo's sensor chip is supported by Speedfan, you can adjust the fanspeed with it.
Another option would be to replace the NB fansink with a Zalman fanless northbridge heatsink like the NB47J... I got a 865PE Neo2-V board and it came with a passive heatsink, so a passive heatsink might work OK for yours as long as you got good case airflow.
Good luck.
Similar Messages
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Fans intermittently run @ full speed - problem solved - wireless card was culprit
I hope this helps someone in the future with this odd problem, that I see is rare but not unknown.
I have a P7-1222 which from new, would on about 1 in 10 powerups (i.e., random) have both CPU and case fans running full speed (several thousand RPM) making the machine very loud. They would reset to more normal speeds of ~ 1000 on a cold or hot reset.
TMPIN1 at time this occurred at powerup would, via HWMONITOR or SIW, show 99C (which was impossible), making the fans race.
Two motherboard replacements, PS substitution, CPU swap etc. did nothing. The intermittent problem persisted.
Now the culprit has been identified. I replaced the wireless LAN/Bluetooth combo PCI mini card with an identical unit from eBay (in this machine, an HP COMPAQ 615939-001 652279-001 WIRELESS N BLUETOOTH COMBO WLAN MINICARD). The problem of intermittent fan racing is now gone.
The wireless card in the machine seems to have been the culprit, perhaps occasionally sending a noise spike on powerup as it initialized onto the bus, thus affecting the Fintek F71858 LPCIO TMPIN1 reading and making it 99C, causing fans to race via BIOS thinking the machine was burning up!
Doing some investigating, I had found the following in the Data Sheet for the Fintek F71858 LPCIO chip ("Hardware KBC with ACPI, Temp. and Fan Control") used on numerous HP/Pegatron motherboards, including the Carmel/Carmel2 and other HP boards that use the same basic circuit layout:
=======================
8. PCB Layout Guide
F71858 adopts Current Mode measure method to do temperature detected. The measure data will not be affected by different process of CPU due to use current mode technology. This technology measures mini-voltage from the remote sensor so a good PCB layout must be cared about noise minimizing. The noises often come from circuit trace which is a track from remote sensor (CPU side) to detect circuit input (F71858 side). The signal on this track will be inducted mini-noises when it passes through a high electromagnetic area. Those effects will result in the mini-noises and show in the detected side. It will be reported a wrong data which you want to measure. Please pay attention and follow up the check list below in order to get an actual and real temperature inside the chip.
... Place the F71858 as close as practical to the remote sensor diode. In noisy environments, such as a computer main-board, the distance can be 4 to 8 inches. (typ). This length can be increased if the worst noise sources are avoided.
Noise sources generally include clock generators, CRTs, memory buses and PCI/ISA bus etc
=======================
And defective wireless cards can be a noise source too, it seems.The issue was what I expected. I picked a new reader last night and everything works fine. My old card reader just didn't work with the new card.
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Cooling fans constantly run @ full speed after replacing the upper CPU??
After replacing the upper CPU on a Power Mac G5 (June 2004), Dual 1.8Ghz PowerPC, model M9454LL/A, all the cooling fans constantly run at full speed. All other operations are normal.
I've read, "...after replacing or switching CPU locations the Logic Board doesn't properly recognize the CPU's in their new location and a "Thermal Calibration" is needed". Could a "Thermal Calibration" possibly correct the constant full fan speed issue?
What software would be required?Hi-
Could a "Thermal Calibration" possibly correct the constant full fan speed issue?
Yes.
What software would be required?
The Apple Service Diagnostic disc (ASD) of the proper version for your machine.
Call an authorized Apple service provider and arrange a calibration, as the disc is not readily available to individuals. -
Power Supply Fan Always Runs Full Throttle - Mac Pro (Early 2008)
My Mac Pro has been almost flawless since I purchased it new in February 2008. I did not purchase the AppleCare because I rather naively assumed at the time that my shiny new Mac Pro was an invincible machine. (I was seduced by Apple after all!) Well, that was when I was younger (about 2.5 years ago) and before I knew about the actual cost of things like Logic Boards and Apple Power Supplies... Now the $250 AppleCare lifeline seems like a bargain!
The Problem:
1 week after installing Windows 7 64-bit to a separate internal hard drive using boot camp 3.1, my Mac Pro was playing music from the local iTunes library in Snow Leopard when the power supply fan revved up to 2760 rpm! I immediately tried rebooting the machine, resetting the PRAM and SMC several times, but the fans continue to throttle up to almost 2800 rpm within seconds of powering on the Mac.
I have run the Apple Hardware Test several times and every time it generates the same error code within 1 loop of either the extended or regular test:
4SNS/1/40000001: lp0C-0.000
An Apple Support technician was kind enough to "sneak" me a little bit of information about the error code. He told me the message is Logic Board Sensor related and could be caused by a faulty Logic Board, Sensor Board (Ambient Board?), Power Supply or possibly a faulty sensor that might be repairable.
Emotion:
Other than my 6 month old daughter eyeing the Mac Pro with the same suspicion she reserves for the Dyson vacuum cleaner, the computer still works fine--it hasn’t crashed in either Windows 7 64-bit or Snow Leopard and I haven’t noticed any unusual behavior. I had one other problem with this computer about 1 year ago when I installed Vista using boot camp. About a week after the Vista install, the OEM ATI HD 2600 XT completely died and I replaced it with a GTX 285.
I have grown a little suspicious about the efficiency of boot camp in the Windows environment, but perhaps the 2 separate boot camp installs and subsequent hardware failures are coincidence or related to the hardware issue I am yet to resolve...?
Hopefully, someone in the Apple community will offer guidance to a swift and economical solution!
Thank you in advance for your time.
Some Data:
iStat Pro Info
CPU
User: 0%
Nice: 0%
Sys: 0%
Idle: 100%
TEMPs (in Fahrenheit) - There was no entry for Power Supply Temp in iStat!
HD1: 90
HD2: 90
HD3: 92
HD4: 92
CPUA: 88
CPUA: 86
CPUB: 88
CPUB: 86
Ambient: 76
Expansion Slots: 94
HD Bay1: 83
HD Bay2: 83
HD Bay3: 83
Hd Bay4: 81
Mem Bank A1: 106
Mem Bank A2: 99
Mem Bank A3: 99
Mem Bank B1: 92
Mem Bank B2: 92
Mem Bank B3: 94
Mem Module A1: 130
Mem Module A2: 126
Northbridge: 106
FAN SPEED (rpm)
Power Supply: 2760
Exhaust: 600
CPU Fan: 500
HD/Expansion: 800
Hardware Overview
Model Name: Mac Pro
Model Identifier: MacPro3,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.8 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per processor): 12 MB
Memory: 2 GB
Bus Speed: 1.6 GHz
Boot ROM Version: MP31.006C.B05
SMC Version (system): 1.25f4I had the same problem. The solution was replacing the Power Supply.
Because i had Apple Care there where no costs. -
Z68A-GD80(G3) system fan always at full speed
I updated the BIOS to J0 with ME8. Installed latest ME and chip set drivers. Set target CPU temparature to 70° and minimum fan speed to 0%. Now my system fans are always at 100%. My systems are PWM type connected to the 4 pin connector on the motherboard. I use control center to set the speed to. 50% but the setting won't stick. The fans used to stay at low speed. It is way too noisy now. Any idea what cause this?
I get around the issue by using the SpeedFan utility. Install SpeedFan and use the advance configuration to set PWM2 and PWN3 on F71889A to "TEMPERATURE" (the setting were "MANUAL"). The system fans drops to 65% immediately. PWM1 should be the CPU fan connector and is already in "TEMPERATURE". However, the setting still won't stick after reboot. I ended up creating a startup task in the Windows scheduler to run SpeedFan automatically at startup and problem solved.
I believe the CPU temp target in the J0 BIOS only control PWM1 and probably the same in previous BIOS. I used Control Center to set the fans to silent before. My guess is that that Control Center set the fan speed back to silent mode every time the system starts (it has an auto start entry in the registry). Some how that no longer works with the new BIOS/ME8. I even tried reinstalling Control Center and still no luck.
I hope MSI reintroduce settings for PWM2 and PWM3 directly in future BIOS update. -
Fans running full speed after hard drive replacement
I have a 24" aluminum iMac (iMac7,1) which had a hard drive failure. I replaced the hard drive myself and all went well. However, now my fans are running full speed. This appears to be because of a problem with detecting my temperature sensors now. During the install I only touched two temp. sensors, the hard drive sensor and the LCD sensor. I made special care to make sure I got the sensors back in place.
Using iStat Pro the only temp. sensors I have readings for are the Hard Drive and Power Supply. I am missing ambient, optical drive, CPU, and display. Out of those the only one out of the missing ones I touched are the display one. I have since gone back into the machine to ensure the LCD temp. sensor was fully connected and to ensure the HD one was connected (although that one is working).
What is really strange is the ambient sensor appears to be a diode on the main board so I really don't see a way I could have messed that one up. Also, I didn't touch the CPU sensor (didn't even see it), nor did I touch the optical sensor.
Anyway I have tried:
PRAM reset
SMC reset
went back into the box to make sure all temp sensors where in place.
I am out of troubleshooting ideas. Can anyone provide additional insight?Mechanic man thanks for the response.
Besides for the fan noise the machine is running like a champ. The new hard drive seems to be fine, actually my machine boots up faster now than it ever did (faster drive I suppose). I ran disk utility and did a verify on the new disk and it didn't detect any problems.
The fans run at full speed immediately at power-on (maybe a one second pause). I first noticed it when I booted up from the startup disk to do a time machine restore. So yes, it occurs when booting from a system disk.
I have been unable to run Apple Hardware Test, I saw this step in some google searching and Apple docs but I don't seem to have AHT on any disk. I have tried putting the Snow Leopard disk in and holding "d" at boot time to no affect. I did some further reading and found that AHT may only be included on disks that come with the machine. I am going to try to dig up my Tiger disks and see if I can get AHT to run from there (10.4 was the factory installed OS when I bought my iMac).
I am also considering trying to re-install SMC firmware (http://support.apple.com/kb/HT2368). Even though it will be the same version at least I know the SMC reset has taken place.
Since the fans run full speed right at start up that suggests to me that it is a physical hardware problem (i.e. something wrong with the sensors) or a firmware issue. I am leaning toward firmware. -
MY FAN IS ALWAYS ON FULL SPEED
Please help out there my MB fan is always on full speed especially when whatching ovies on Batt power which drains my batt quick. and i was not like that before
especially when whatching \[m?\]ovies on Batt power
First, movies are CPU-intensive tasks, which may explain the need for fan speed. That might not be all, though.
The thing to do it run /Applications/Utilities/Activity Monitor to see which processes are using the most CPU. It's entirely possible that you have some runaway process running that's causing the system to run hot, and therefore need additional cooling. -
Mac mini server and harddrive 1 of 2 failed now fan runs full speed
I have a 2010 mac mini server. One of the drives failed.
I took out the bad one and the fan started to run full speed.
Replaced that drive with a new one. runs great but fan is running.
I put the temp sensor in exact same place but had to use a small pc of tape
to hold it on. I used the same tape that was holding the wires to the drive.
I used the temp sensor connector on the logic board closest to the fan connector?
Does that matter?Hello, possible work arounds...
HDD Fan Control
HDD Fan Control works to fix this issue by reading the drives internal temperature using the S.M.A.R.T protocol and set the fans actual speed to a value good to protect the drive. It runs at startup and continually to always control the fan correctly, prevent the loud fan noise and protect the drive from overheating.
Free SSDFan Control...
http://exirion.net/ssdfanctrl/ -
Ix4-300 fan keeps running full blast and the NAS never comes online
When I turn on the ix4-300 after a couple of seconds its fan starts running full blast but the NAS never comes online. The NAS lcd was damaged in the move so I don't know what is going on, it was working fine for a couple of weeks (with the damaged lcd) but this started happening a few days ago. Things that I've tried:
Used the other ix4-300 (I've 2) with the faulty NAS... same result
Let the NAS run with full FANS for 4 plus hours ......, Still didn't come online
Also both the blue and white light are constant .... no blinking whatsoever.
Any ideas ...
Solved!
Go to Solution.It could be the device itself. Is it covered by the warranty?
Are you concerned about retrieving the data or do you just want the device back up and running properly?
If you are not concerned about data, you can try the following procedure at your own risk:
Power down the device and reseat all the drives in the device. Power the device back on.
If this doesn’t allow unit to boot, continue with below process.
1. Turn off the device and pull out all the drives.
2. Place any other drive 2, 3 or 4 in the first slot and boot up the device.
3. Wait for sometime as the boot-up process can be slow.
a. If it doesn’t boot, try another disk in slot 1.
4. If it boots up correctly, insert another disk in slot 2.
- Check UI for disk detection.
a. If second disk is detected, turn it off, place disk 3 and 4 in unit and boot up.
b. If it doesn’t boot-up correctly, remove 3 or 4 and retry. You may need to try to determine if 3 or 4 is bad in this case.
5. Recreate the volume if it doesn’t start regenerating automatically
Have questions and need answers?
Search the database for answers to FAQ's, software/driver downloads, tutorials, news, features and more!
LenovoEMC Support & Downloads
LenovoEMC North America Support Contact Page -
Fan always running on my HP Pavilion All-in-One 200-5000 (model #2MD0400F1W)
The fan on my HP Pavilion All-in-One 200-5000 (model #2MD0400F1W) seems to be always running (and it's not quiet). I believe I'm running the latest BIOS and I've already checked to make sure the air vents are clear. I'm not running any memory or processor intensive applications. Any suggestions how to reduce how long and frequently the fan seems to be running? Thanks.
Hello @jmgoldsmith,
I understand that you are having issues with the fan always running on your HP Pavilion All-In-One 200-5000 Desktop PC. I would be happy to assist you, but first I would encourage you to post your product number for your computer the number you provided is not a product number (example : HP Pavilion All-In-One 200-5000t CTO Desktop PC has a product number of BN997AV). I am linking an HP Support document below that will show you how to find your product number. As well, if you could indicate which operating system you are using. And whether your operating system is 32-bit or 64-bit as with this and the product number I can provide you with accurate information.
How Do I Find My Model Number or Product Number?
Which Windows operating system am I running?
Is the Windows Version on My Computer 32-bit or 64-bit?
Please re-post with the requested information and I would be happy to provide you with assistance. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
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I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter -
Cold MBP, exhaust fan running full speed
Hello,
My 3mo old MBP exhaust fan has started running full speed (6200rpm), no processes or heat are to blame.
iStat pro say's the fan is currently at 6196rpm, highest temp sensor is at 30 degrees C.
Process monitoring says kernel_task using 160% of my two cores (interrupts?), this is a cause or a effect.
Reseting SMC had no improvement (unsure if I've managed to do correctly). Appart from that the machine works, very slowly, noisy, and very cold on my laps.
I'm on a business trip, don't have the diagnostic CD with me...
Any ideas so I can at least work during this trip ?
Thanks for your help, and for these forums.Hello folks,
I'm in the same situation, the only difference is my hardware from 2006:
Model Name: MacBook Pro
Model Identifier: MacBookPro1,2
Processor Name: Intel Core Duo
Processor Speed: 2,16 GHz
After running the ASD, I got this:
+Temp Sensor - Palm rest L test 1 - Sensor Reads Within Operating Range.+
+-Check to ensure that sensor reads within operating range.+
+ERROR - Unable to read sensor+
+- T E S T F A I L E D -+
The sensor code is the same one from the post above: Ts0P.
So now, after looking for more than 4 hours on the internet, I couldn't find a clue.
What exactly is the location of this sensor?
Can someone please post a picture?
How can i fix this?
Thanks for everybody.
Message was edited by: Pierobon
Message was edited by: Pierobon -
My fan always runs on my macbook, any tips?
Currently I have my macbook on a clean desk with good ventilation, but my fan always runs, even if there are no programs open. I've reset the SMC, and checked that theres no printing jobs in the printing queue but no luck. I've had this macbook for about a year and a half and have used it a ton since then. I dont want anything to burn out or break in my laptop. Any tips? thanks
I have the same problem on my late 2008 Macbook white 2.1 GHz Intel duo, running 10.5.8. I had read in another post here that I should check Activity Monitor and I did so. The first time I tried, as soon as I launched AM the fan stopped. I then left AM open and the next time the fan started (I was online, doing nothing in particular - I did have 4 or 5 panels open though) I checked AM and the process that came at the top of the list with 90-odd CPU usage was kernel_task. I quit AM and then launched it again and the fan stopped, with kernel_task taking up about 2% of the CPU and Safari around 30%.
What's going on? Hardware? Software? -
Classic makes fans run full speed
I think this is new. When I run Classic my fans run full speed (10.4.8 G5 iMac 20") with any of the kid's games. I've done the SMU reset, blown dust from vents, tried different power settings. I think blowing out the dust reduced fan use in OS X, but not in classic.
Thermograph data suggests the fans are behaving appropriately, so I think the system is running hotter than in the past. Anyone have other ideas? Anyone else seeing this classic behavior?Have a look at one post I made some months ago :
http://discussions.apple.com/message.jspa?messageID=1621311#1621311
I discovered that going back to Classic from one user to the other make a large use of CPU (80 to 90%) thus rising the temperature and conversly the fan...
If you open classic in one enironnment that's not true. Check it with Acivity Monitor.
Hope this helps.
JfS -
CPU fan running full speed after 15 minutes
My 3 month old iMac 24" has just started having fan problems.
Before I went away on a training course, it was working fine. Left it switched off at the outlet for 3 days, now the CPU fan runs full speed after the iMac has been switched on for 15 to 20 minutes.
CPU temp is 24C, CPU heatsink is 28C. Ambient is 17C. CPU fan is 3600rpm. Other fans are normal.
CPU usage is less that 10%. Only Safari is running.
I've tried resetting the SMC - left all plugs disconnected for 15 minutes, reconnected mains power for 15 minutes, reconnected USB, then switched on.
Still the same - OK for 15 minutes, then CPU fan runs full speed.
Anything else that I can try?I tried again, following your instructions exactly. It seemed to work, running normally for about an hour.
I left all the USB devices unplugged, except for the keyboard and mouse.
I then shut the iMac down, but left the mains power turned on at the wall. When I switched it on again 2 hours later, all was OK for 15 minutes, then the CPU fan ran at full speed.
Shutting down for a few seconds fixes it for another 15 minutes.
I'm wondering if it's a software problem, although I haven't loaded any apps recently, apart from a few monitoring programs since this problem appeared.
Last night I left it running the extended hardware test for a couple of hours, and the fans were fine.
One thing that I noticed yesterday was that the "GPU" temperature readings in iStat were all missing (just "-" displayed) for a couple of seconds when I clicked on Dashboard. Is there a way to keep iStat open while I'm using the iMac?
I think I'll try booting XP and see what happens. -
Fan runs full speed at start up
HP Pavilion p6-2037cb purchased 1/19/12. Windows 7. There is no error message.
When I turn the computer on after it has been off all night the fan runs full speed. This happened a few times in the first month. The first time it stopped itself after a few minutes. Then I learned to stop it by simply restarting the computer. This still works, but what used to happen a couple times a month, has happened twice in two days so I worry the problem is getting worse.
It never happens when I am using the computer because I do nothing that requires a lot of cpu's or causes heating. I just surf the web and do email. No games or videos or TV.
If it is a fan connection problem I would like to know the nearest repair service. I would rather bring it in than ship it. But I can't find a list of authorized warranty repair service centers. I followed links on HP Support Assistant but got sent to a site that does not list Pavilions.
I need to know why the fan runs full speed at start up and where to get it fixed near where I live.
This question was solved.
View Solution.Hello mpw101,
Seems like there was some confusion on the products your received and how it was explained. I have forwarded your thread to the appropriate team for review. Someone should be in contact with you shortly so you can discuss your HP customer care experience.
If I have helped you in any way click the Kudos button to say Thanks.
The community works together, click Accept as Solution on the post that solves your issue for other members of the community to benefit from the solution.
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