Mac Pro fans run full speed after installing Solid State Drives

I recently visited the Genius Bar at my local Apple store because my Mac Pro's fans were running at full speed after installing 2 solid state drives. The genius told me that it was because the drives themselves are so small they don't touch the metal tab on the motherboard that reads the drive's temperature, so it defaults to running full speed. Does anyone know how to fix this problem? I've tried smcFan Control but it doesn't let me set the actual fan speed. I'm getting 5200 rpms on my Boost A and B fans, and this causes an insane amount of noise. Can anyone help?

Which model Mac Pro?
I have an SSD in a 2009 (MacPro4,1). I removed it from the 2.5 in stamped metal can, and just installed the bare circuit board onto the SATA connector. It does not make any contact with the metal tab below the SATA connector. The only trouble I have is that Tech Tool Pro says its temperature is not optimum when it does disk tests.

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CPU fan running full speed after 15 minutes

My 3 month old iMac 24" has just started having fan problems.
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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?
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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).
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SMC reset
went back into the box to make sure all temp sensors where in place.
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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.

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Tried the SMC reset twice to no avail, using the 'hold button in' as described by another poster here. So I tried it again, twice, without holding in the button. No change.
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The mini will go to the hospital for required surgery, will probably end up on the wife's desk, since she hates the Vista PC I gave her. I hope she likes the Mini, she sure won't get that new iMac anytime soon.
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Hi everyone,
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Hi everyone,
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Did it come unplugged from the factory? Or was this due to an installation you or an authorized provider did?

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HP Pavilion p6-2037cb purchased 1/19/12. Windows 7. There is no error message.
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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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I think that it's normal that the fans run full speed when you use Parallels. It also means that your MacBook's thermal paste was applied well.
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Have a look at one post I made some months ago :
http://discussions.apple.com/message.jspa?messageID=1621311#1621311
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go to the Store and configure all the models with upgrades but... an SSD will be fast and responsive, no noise or heat and adds $200 probably to the cost
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MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
http://www.apple.com/support/macbookpro

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As expected after running well at about 11:40 Mail slowed down and the SBoD started.
The console shows the following:
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19/2/10 11:42:42 AM [0x0-0x6f06f].com.apple.Safari[4671] Debugger() was called!
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Dependency: Operation "DONE", DONE <0x17f1c1e0>
Dependency: Operation "IDLE", DONE <0x1843e0b0>
Dependency: Operation "SELECT", DONE <0x17f22ee0>
Mailbox name: Apple Mail To Do
Mailbox name: Apple Mail To Do, had IMAPMailbox INBOX:
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I have a 2010 mac mini server. One of the drives failed.
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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/

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HI everybody,
I have been looking around in many forums and i noticed that a lot of people encountered a similar problem. Unfortunately untill now, nobody could give a real suggestion on how solve this issue.
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I have tried several solutions....but nothing so for.
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Try a Heat gun...
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Mac Pro fans run full speed after installing Solid State Drives

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