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Cpu fan still running when the system was shutown..

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Just hold the power button until it turns off

Posted on Jan 19, 2009

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What makes 511-cpu fan not detected and 512-chassis not detected


Are you seeing this error on a system you built or a pre-built system? If it is a pre-built system, check that the fans are running. Next check where the fans are plugged in, the CPU fan must be connected to the CPU fan connector on your motherboard. The chassis (rear case fan) only needs to be connected to the motherboard if you want the monitoring/PWM (modulated fan speed) option. If your CPU fan is powered directly from the power supply, change this.

If this is a system you built or recently updated the case, check your fan power connections, as above. Next check the fan speed. My ASUS board will give the "CPU fan not detected" error if the CPU fan speed is too slow. A different CPU fan will solve the problem. (I got my fan with the CPU; it works fine.)

I hope this helps. Please add a comment with more information about your system for more assistance.

Cindy Wells

May 12, 2013 | Computers & Internet

2 Answers

CPU FAN STUCK ON FULL SPEED.


I think if the CPU run always on full speed and the noise is evident and bothers you ..it means that it has something that force the CPU to run on a higher temperature than normal one ..
This can be the environment or a heat source you use in the room ..or just dust covering the heat dispenser and making necessary for the fan to run faster to compensate .
running the system for long hours and having a high temperature in the room is probably the cause..To avoid damage ..try to clean teh heat dispenser (the aluminum part under the fan )..or at least to remove teh system cover and leave it cool better ..you can also install a second fan and this way assure a better cooling for the CPU ..

Sep 16, 2011 | Acer Aspire X3910-U3012 (PTSED02010) PC...

1 Answer

CPU Fan Failed


Yes that is what you need to do. It's either due to your CPU board having issues or your fan is just old and needs to be replaced. You always need to have a fan running to cool off your CPU. Let me know if this helps and if you need anything else.

Apr 08, 2009 | Computers & Internet

1 Answer

System temperature too high


Do you still have your manual? If not download it from Gigabyte at this link:http://www.giga-byte.com/Products/Motherboard/Products_Spec.aspx?ProductID=2637
Enter your bios & open manual to page 51, "PC Health Status". Here you can monitor the CPU temp, system temp & CPU fan speed. Notice the manual shows the example of system temp to be 30degs C & current CPU Temperature is at 47degs C. One would think these temps are reasonable. My CPU fan runs between 3308Rpm & 3341Rpm. CPU @ 41deg C & MB @ 31deg C. AMD 64 X2 Dual Core 4200+ 2.21 GHz.
Suggest you try this. If your running Win XP. Open system properties. Click the Advanced tab. Click the settings button under
Startup and Recovery. Remove the check mark to the left of, Automatically restart. Windows should provide an error message if & when the system freezes. This will help in finding what is causing the system to freeze. If your CPU fan is running under 3000Rpm you might consider buying a faster fan or add a case fan to the side of the case to help bring in fresh air to blow onto the CPU fan & PCI-Express card. Here is a decent lace to look for case fans: http://www.xoxide.com/casefans.html

Keep me up to date andr_zero.
Good luck!
Mike

Dec 17, 2008 | Gigabyte GA-P35-DQ6 Motherboard

1 Answer

Cpu fan not running fast enough


This will depend on the motherboard you are using.

however, you need to make sure that the CPU fan lead is plugged into the correct plug on the motherboard... for example, I have an Intel 975xbx motherboard and it has 4 fan plugs, but only one of those is for the CPU. The others are for front/rear/top fans. If the CPU fan is plugged into one of the secondary ports, the CPU fan wont speed up correctly.

Also, some BIOS settings in the motherboard allow you to enable or disable automatic fan speed adjustment, and also set the temperature points.

Dec 03, 2008 | Zalman Tech Computers & Internet

1 Answer

Sony TZ240n problem.


If less than 90 days, it is under Sony's full coverage. Usually the fan runs intermitantly. Check that air paths are not restricted.

Aug 01, 2008 | Sony CPU FAN CPU Fan

1 Answer

System shutdown


Systems that shut down after being powered on can point to an over heating of the CPU. Other factors come into play with overheating. Too much dust build-up on & under the CPU fan blades. Dust builds up in-between the heatsink fins (Thus the CPU fan can not cool the CPU chip.)
The CPU fan may be running too slow. When the PC system shuts down it’s saving you from hurting the system. You did not list the model number of you're system. Check you're system & clean the mentioned parts. Use canned air & a dry clean small paint brush to help remove possible dust buildup blow the dust away with the canned air.

Mike

Jul 23, 2008 | Intel Motherboard

1 Answer

Motherboard problem


Chances are the CPU fan may be running too slow, dust & dirt build up under & over the fan blades can be a big factor. CPU fan could just be going. Are you over clocking the system. (IF so buy a better heatsink & fan for over clocking the system).
To check if CPU is getting too hot. Enter the bios & go to the title, "Power" page 2-28. Open Hardware monitor & check the CPU temp & mother board temp. (Make sure the case is closed in normal running conditions).
Link to Asus: http://support.asus.com/download/download.aspx?modelname=M2N-MX&SLanguage=en-us

Jul 02, 2008 | ASUS M2N-MX Motherboard

2 Answers

My 4-pin cpu fan is not running


check the power connection for your mother board and fan

Mar 09, 2008 | Computers & Internet

1 Answer

Averatec cpu fan


IF you check your BIOS and everything is fine, and also you run a stress test, and everything clears. They you have no problem, usually you see this error in custom builds.

rate pls

Jan 19, 2008 | Averatec Sotec 3200 Series Fan with...

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