Question about ASUS P5P800-MX Motherboard

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Cpu Fan error

Hi, just recieved a new computer today, when i switch it on i get a message saying cpu fan error, then after a short time the computer shuts down. Any help be appreciated as i cant install windows xp on it. Thanks Intel Pentium D 5.3GHZ (DUAL CORE 2.66) 1G 3200 RAM

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Re: Cpu Fan error

Do you have a manual for the mother board?? Sounds like someone forgot to plug in the fan or you didnt say if the fan was working on the microprocessor or not?? If its not working then the plug for the fan should be right by the socket fore the processor. If it is working then theres a setting in the bios that has to be reset. I would take the board to or ask the person you bought it from about it. Did you buy the board with a case or all pieces separate? Good Luck

Posted on Jun 15, 2006

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Error message shuts computer at start up...CPU fan failed. HP Pavilion M8400 F Phenom X49500 2.2 GHz (computer is new to me)

the trick is that there is more than one spot where you can plug in the CPU fan, had the same issue with an HP myself. try a different spot to plug in the CPU cooler. mine was in the upper right hand of the board and was labeled CFAN. the one i thought was for the CPU (it was same color as the fan connector) was actually a case fan connection.

Mar 29, 2010 | ASUS M3A78-CM AMD 780V AM2+ Phenom FX /...

1 Answer


does your machine make it to the windows login screen, or does it fail before.

I think you haven't installed you CPU correctly, or maybe did not put heat sink compund evenly on the heat sink, and that causes the CPU to overheat and freeze.

Mar 23, 2009 | Mercury P4VM800M7 Motherboard

1 Answer


Make sure it is plugged into the right pin header and it is on the right way. The pins should be labeled as cpu you may be in the pins labeled sys.

Mar 18, 2009 | Intel Motherboard

1 Answer


Check to make sure the CPU fan is plugged into the motherboard CPU fan power pins. Should be a 3pin port on the motherboard near the cpu with a white piece of plastic on the one side of it to show you are to plug in the cable correctly.

See if the fan spins at all on start up, or even when the computer is off, spin it with your finger and see if it gets hung up anywhere while it spins.

Mar 18, 2009 | Intel Motherboard

1 Answer

Cpu Fan error

cpu fan might gone out of order, open your cpu cover, observe the condition of cpu fan, if it is idle, replacment is the best solution. 

Jan 20, 2009 | HP (D9820-60007) Motherboard

2 Answers

Cpu fan noisy/chip fan fail error messages


Yes. This sounds like a fan issue. The noise often comes from bearings failing within the fan. Also, a failing bearing can make things harder on the motor as it brings the fan up to speed. This is likely the reason that you see increased warnings during the fan speed check while booting because it comes to speed more slowly as bearing wear increases.

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.

Apr 03, 2008 | ASUS A8N-E Motherboard

1 Answer

Cpu fan noisy /chip fan fail

You must buy a new CPU Fan. You can get them HERE or a zillion other places on the Internet. You need a Socket 939 type fan that will handle your cpu speed. If you need help installing it, it may be in the manual. You can read the manual by clicking on the picture of your MB at the top of this post and then scrolling down.

Hope that fixed ya...


Apr 01, 2008 | ASUS A8N-E Motherboard

1 Answer

CPU fan stops, computer shuts down

You must have the CPU fan plugged into the CPU fan power connector or the system can not monitor the fans speed. Your PC will shut down & give you that message. (The fan must be connected to the correct power plug).
If when you did replace the CPU's fan & had to remove the heat sink, which is where the fan screws into & did not clean the old thermal grease off the CPU & heatsink & replace with new thermal grease than your CPU will still overheat. If you add thermal grease over top of old thermal grease your CPU will over heat.
This is all a balancing act. If any one is not correct your system will shut down. (This is better than killing the CPU).
To remove old thermal grease use a clean cloth damped with house hold alcohol & use the same on the bottom of the heatsink. Please allow plenty of time for the alcohol to dry.

Good Luck! Take your time.

Mar 30, 2008 | HP (P2074-63003) Motherboard

1 Answer

Cpu man error

The first screen you see should prompt you to hit a key to enter the bios
such as f2 or del ( delete)

Feb 02, 2008 | ASUS P5VD2-MX SE Motherboard

1 Answer

Your CPU may have a problem

Have you removed all memory, other cards and unhooked all other drives to see if a short exists there? With a 300W PS some other component may be pulling too much that the CPU can't start so it tells you the problem is with the CPU or The CPU its refering to is on the video card? Good Luck, Tim

Feb 10, 2007 | Albatron K8T800 (K8X800 PRO LL)...

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