Question about ASUS A8N-E Motherboard

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CPU fan fail or speed too low

Hi! There are a few days that my computer is not working properly... When I turn on my computer I used to get a warning message "chipset fan fail or speed too low". Opened the sides, cleaned the fans and turned it on. The first time I turned it on it was working correctly, the second time I got a message "CPU fan fail or speed to low" Opened the sides again, cleaned it once more, turned it back on...same problem. I made a research oven the net and found that the CPU fan needs to be replaced as soon as we purchase the product, well I didn't (and I already have it a year)! Now, my computer is not as noisy as it was before but all fans are working properly as I checked in the BIOS. My motherboard is an ASUS A8N-E one. By the way, on the device manager I have a question mark under PCI bridge and the whole section of "other devices" in general has question marks. How can I fix them? Thank you in advance.

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  • just_godlike Sep 20, 2008

    When i start my computer, it starts beeping and a message "CPU Fan speed too low" appears. If i restart it, the error does not show, but after few hours being off, the message appears again. I tried to enter BIOS and disable the warning, but i cant find where is it. Need help.

  • Anonymous Nov 23, 2008

    me too

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Hi,

I bought the same motherboard this past year (used) and installed it with AMD Athlon 64 fx-57, Antec P180 case, 550 w power supply. I had the case cover off to check the fans when I first fired it up. The AMD oem cpu fan hesitated at power on for a few seconds, which worried me. It started spinning normally and I then shut the system down and waited a few minutes before restarting it. It spinned up fine so I put the cover back on. I started getting the same error you mentioned, so I updated the BIOS to 1013 version. That didn't solve the problem. I ended up disabling the warning in the BIOS as I got tired of seeing it, as I could see the fans were all spinning and the CPU temperature was at about 26 to 34 on cold boot.

I recently checked on this problem and seems many others with this board have this problem. One fellow said he mailed off a question the the problem to ASUStek and they replied that it is just a glitch, that the fan is "smarter" than the BIOS, as it will hesitate to spin fully at start up if the CPU is cool. The suggestion was to disable "Q Fan Controller" in BIOS. I did and don't get that warning.

As for the yellow question marks under manage in Windows, you need to install the drivers for all of those devices, and they will be on the disk that came with the motherboard. I use the latest drivers from the ASUS site, but the only one I couldn't install was the ACPI ATK 0110 Virtual Device that came out in 2007. When I try to unpack the .rar file it says Corrupt Headers and refuses to use the driver from that file. So, I use the driver from the disk.


Posted on Oct 19, 2008

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The pci bridge refers to the pci slot controller, which is the white slots that are used to fit cards like modems, firewire cards, usb cards and soundcards. Your motherboard cannot recognise these as all the drivers for the motherboard must be re installed. All the other devices that are not recognised by way of '!' and '?' marks are probably using the pci slots but are unable to works as the pci slots are not controlled. You can download all driver for your motherboard here http://support.asus.com/download/download.aspx?SLanguage=en-us

Posted on Apr 13, 2007

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Hi, on the CPU fan issue maybe you want to try to revive it. Unplug your PC, You may have to lay it down on its side. Remove the cover to expose the motherboard. Remove the 4 screws holding the fan on top of the heatsink in place. For convenience you can remove the three wire terminal connected to the mb. Working on the fan, use a clean paint brush to remove dust and accumulated grime and dirt. clean as much as possible. underneath the fan is a paper sticker, scrape it off. beneath that is a spindle about the size of a matchstick. if you turn the fan blades, it also turns. put a few drops of oil such as WD40 to clean and lubricate the spindle and bearings. you may have to slightly push the fan in and out to force the oil deepers inside. add soon as the level goes down. sometimes, the spindle/bearing is not immediately seen. it may be covered by a rubber seal which you canpry off. thereafter, proceed with the oiling proces. Reassemble back and screw in place. Hoe this works out for you. Regards

Posted on Apr 13, 2007

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In Asus bios in Power tab at Harware Monitoring u have the option to set the minimum cpu fan RPM when cpu is cool. if u didnt change it then its set at 20%. try put it at 30%. this might also help.
i have fan issues too once in a while with an Asus p5ld2 moba with intel dual core on it. the fan was starting at very low rpm like about 930-950 RPM and everything was indeed pretty cool, no heat but was making noise.
ennoying:D

Posted on Jan 12, 2013

This problem is caused because you have enabled the option "Auto Fan Speed" and "Enable CPU low speed advice". When you turn on your computer in most cases the CPU fan turns on for a while, and before the boot beep it stops. This will happen when the case is cool, then, the message of the low speed CPU fan appears. To be sure that is what i'm saying try to run for 20 o 30 minutes the pc and then reboot it. If this message does not appear this is the problem. The possible solution is that you can get inside the bios and dissable the option of low speed CPU warning or somthing similar, or you could also try to disable the option of auto speed CPU fan. I hope this could help you.

Posted on May 12, 2007

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How to solve CPU fan not connected

Posted on Dec 16, 2009

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old post.
odd symptoms.
the OP never once told the full story
what works good and not.
XP runs? surely it can, 0.4% 2016 run XP world wide and way less now 2018, due to virus magnet status.
do not run XP , and the fan is not XP job.
BIOS runs the fans.
if the PC runs at 56C or so and the fans slow that is normal
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if they rise too high the fans spin up.
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my fancy desktop has 600rpm fans right now, due to cool running CPU. 4 pin fans can do that magic.

The reason for the fast spin up is easy to learn turned on fresh.
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say PC parked in a trunk at 120F
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can turn them selves off they HALT.
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ok?

and did you really clean it
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http://www.pcdied.com/overheated.html

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pils,

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I give this a 90% chance that your CPU fan is causing the issue. Since a decent CPU fan will cost you ~$20 online, it's not much out of your pocket if you happen to uncover another culprit.

I'll keep an eye on this post. Let me know how things go.

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