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CPU Fan speed fail or too low

post #1 of 9
Thread Starter 
Sometimes when I start my computer (not overclocked, just standard setting) I get a post stating CPU Fan speed fail or too low. This is using the stock amd fan, its only about 9 months old.

When I press F1 to continue and boot to windows and check my asus probe shows my starting fan speed at 888 (almost at the minimum) and my starting cpu temp at 34c.

After about 30 minutes of average use (today I decrypted a DVD, had windows media player randomly playing music, and surfing the net) my cpu fan comes up to 1180 and my temp is only 37 c.


So long as my temps stay normal should I worry?
post #2 of 9
no ur fine some programs can't detect fan speed if its under 1000, my stock fan is around 700 when idle and some programs detect it as fan failure. What we have is normal, nothing to worry about
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post #3 of 9
Its not a program, its the comp wanting to turn off becuase its not detecting adequate rpm. Check if all the cables are hooked up roght, and watch it spin up when you turn on ur comp. If its slower than usual, replace the fan.
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post #4 of 9
Quote:
Originally Posted by Retrospekt
Its not a program, its the comp wanting to turn off becuase its not detecting adequate rpm. Check if all the cables are hooked up roght, and watch it spin up when you turn on ur comp. If its slower than usual, replace the fan.
no, its a program that does the detecting. some older fan speed detection programs can't detect lower RPM speeds on fans. ALL amd stock fan's RPM are around 700 when CPU under a certain temp (u can change in ur BIOS).
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post #5 of 9
Thread Starter 
This is my asus motherboard when i'm first booting up. I then run asus probe to get the actual rpm.

I have not been in my case in MONTHS (at least 3 or 4) and it just started saying this recently. Using asus probe (what came with my motherboard) my temps never get above 37, maybe 38 at most. And thats while using it for HOURS, playing NFS:MW among other things such as decryping video, encoding video all kinds of cpu intensive activities.

I just don't want to burn my 3200+ up
post #6 of 9
check and see if you have "smart fan" enabled in your bios.......it will regulate the fan speed depending on the load. ie. slow when idle, faster when under load.

I have mine disabled cos is wasn't working properly..I was running way too hot. But that may have been the bios, I've since flashed a newer version but havent checked.
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post #7 of 9
we've almost got the same mobo and chip... my cpu is 32-34 idle and up to 38-40 under load with fan revs floating around 2200 when it's hot. So I would not panic at all, like everyone else has stated. The chip can go much hotter before you need to panic.
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post #8 of 9
Hey man, when I read the post I could bet you had an ASUS mobo, as I had EXACTLY the same problem a month ago, but it turned out ok eventualy.
I suppose your fan has a stock speer of 3000 RPM, as mine does, and below 1000 RPM the ASUS bios detects a fan failure and on boot-up it asks F1 to continue. My other monitoring software like Speedfan and Asus Probe were showing the same speed of around 800 RPM and all sorts of alarms apeared on the screen.
My problem was that I used the computer without a case (spreaded on the desk), and because of that, the ground of the mobo wasn't coupled with the ground of the PSU. This can cause an E-M interference that in time affects the quality of the signal on the mobo. First of all, what I did is to switch the CPU fan on another alimention point, such as the one between the PCIe slot and the CPU. It booted up to 3000 RPM and the bios was seeing it as a case fan, but the CPU fan shown at 0 (since nothing was conected there) so I still had to press F1 to boot, but at least the fan was at 3000 RPM and the CPU safe and cool.
What I'm thinking is that you should find another free conector on the mobo to aliment your fan from, to avoid unpleasant things like a toasted CPU, and after to try to find the problem. I solved it after buying a case and rearanging the cables inside. My rig worked spread on the desk for 5 months without a glitch before this. It seemed to me that the ATX power conector had a bizzare position before buying the case, but now they all work fine.

EDIT: If the fan gets below 500 RPM it will stop working and y'r cpu can be history.
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post #9 of 9
Thread Starter 
I've been watching my temps closely and around 37 is the highest its gotten and after booting my fan cycles up, its currently 964. I had to press F1 but everything else looks fine.

I don't want to roast my cpu but don't want to panic if its not a big deal either.
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