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CPU Fan Speed Just Went Through the Roof

post #1 of 9
Thread Starter 
For some unknown reason, my CPU fan started running at about twice the speed that it used to. It is running at like 6200 rpm! It is making a ton of noise, and is even vibrating the table the machine sits on. The only thing that I changed was that I unplugged the NB fan to reposition it, and plugged it back in. Then the CPU fan started going crazy. Even at "idle" it is running over 4000 rpm w/ SMART fan control on. Any ideas?
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Mr. Blue
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post #2 of 9
checked the cpu temP?
post #3 of 9
Thread Starter 
Yes. It's not hot at all.
Mr. Blue
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Mr. Blue
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post #4 of 9
Go into your bios and change the smartfan configuration. Reglugging your NB fan in must have reset the one for your CPU.


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post #5 of 9
Thread Starter 
Quote:
Originally Posted by dcshoejake View Post
Go into your bios and change the smartfan configuration. Reglugging your NB fan in must have reset the one for your CPU.


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Will try that, though the last time in there I didn't see anyway to adjust the fan speed.

Yeah man... 6200 rpm? For a little, PLASTIC fan?? A little scary. Hard, plastic chunks being flung out at that speed from an exploding fan could do some damage.
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Mr. Blue
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post #6 of 9
Thread Starter 
Yeah, there's no way to change the smartfan config. in BIOS. I tried doing the system restore thing; no go. Fan is still screaming at full speed. I just want it back the way it was, but I don't know what that is...
Mr. Blue
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Mr. Blue
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post #7 of 9
That is one powerful, sturdy fan
Try changing the smart fan control between "PWM", "voltage" and "auto"
I get different speed control results by changing that.
post #8 of 9
Reset/Clear the CMOS, that'll chuck the BIOS settings back to their original state.

When you first boot after doing that, go into the BIOS and find Load Optimized Defaults or something similar.

If that doesn't work, something's wrong with your fan, or try another header.
Unless you've got any software with fan control that's doing it, one way to figure this out would be to see if it only does it after Windows loads or whether it's as soon as you startup.

That's pretty much all you can do really AFAIK, also your Mobo may have BIOS updates that show the Smartstep function aswell as other options they may have thrown in, just for future reference.

Either way, that sounds way wrong for that fan, maybe there's a short somewhere. It's pulling in too many volts to make it spin faster than it should, it should have a limiter in it, maybe that's bust.
Edited by EvoBeardy - 12/24/10 at 3:55am
 
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Exia R2
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by EvoBeardy View Post
Reset/Clear the CMOS, that'll chuck the BIOS settings back to their original state.

When you first boot after doing that, go into the BIOS and find Load Optimized Defaults or something similar.

If that doesn't work, something's wrong with your fan, or try another header.
Unless you've got any software with fan control that's doing it, one way to figure this out would be to see if it only does it after Windows loads or whether it's as soon as you startup.

That's pretty much all you can do really AFAIK, also your Mobo may have BIOS updates that show the Smartstep function aswell as other options they may have thrown in, just for future reference.

Either way, that sounds way wrong for that fan, maybe there's a short somewhere. It's pulling in too many volts to make it spin faster than it should, it should have a limiter in it, maybe that's bust.
Did all this; didn't change anything. I think I'll just leave it.
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Mr. Blue
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