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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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Medion MED MT503 won't start or go through p.o.s.t.


When you say "fan" do you mean case fan or CPU fan? Almost sounds like the CPU fan is inoperative and the system is shutting down on CPU overtemp, then trying to restart.

Aug 01, 2014 | Medion PC Desktops

2 Answers

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 | PC Desktops

1 Answer

Does not boot, no beep, no display, fans running on high speed


Try blowing the dust out of the inside, around the vents, around the fans and by the cpu and heat sink.

Also remove the fan as it sits on the cpu and heat sink. Then remove the heat sink that sits on the cpu, then remove the cpu by releasing the latch on the side of the bay it sits in (remember how the cpu goes back into the bay). Now clean off the old dried up thermal paste on top of the cpu and on the heat sink that sits on the cpu. Put the cpu back into the bay and secure the latch. Apply a fresh coat of Thermal Paste to the CPU and Heat Sink. Put everything back together then reboot.

If the thermal paste has dried or is too thin to keep the unit cool it's like metal touching metal and shorts out the system so it can't boot.

May 31, 2012 | PC Desktops

1 Answer

Cpu fan running high speed for acer power fv 519 1gb ram, vista operating system,


i have acer power fv desktop win 7 1gb ram ,CPU fan running high speed

Jan 22, 2012 | AcerPower FV PC Desktop

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

The system fan is missing or is not working your system has been halted in order to avoid any dammage your system will power down after 3 seconds for hp vectra vl 420 plz help


If you're referring to the fan on the CPU , and it does not run when you turn on the computer , yes replace it. The system is protecting the CPU from overheating . If you're not sure if the fan is bad , remove the computer access cover to the main board , then , turn the computer on and see if the CPU fan starts to spin. If you notice the fan blades vibrating or jiggling but not spinning , then replace the fan motor assembly .

Sep 20, 2010 | PC Desktops

1 Answer

Varying Fan Noise


cpu fans are smart fans it works according to processor's temprature. more processing of cpu makes fans speed faster...slowing down the speed of cpu fan may affect your cpu's performance

Sep 24, 2009 | E-Machines eMachines Desktop PC

1 Answer

My sony vgc-rb40 will not boot bios with cpu fan connected


mostly all fans are 12V DC try connecting all the fans directly to SMPS of the system i.e the red and the black wire

Sep 16, 2009 | Sony VAIO VGC-RB40 PC Desktop

2 Answers

System fan


you may have less fans than possible readings. That 0 rpm fan may be absent and so it is not the problem.

Jan 09, 2008 | HP Pavilion a305w (DM181AR) PC Desktop

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