CPU Fan not spinning

Lalumi · 18 Apr 2007 at 13:27

Just built my new rig basically i have connected everything up 12 pin to the motherboard ive put the CPU fan in GFX card + Power to it but when i start up computer only the side fan spins the cpu just dosnt move.

my spec

Akasa AK-ZEN-01-BK Zen Black Case - No PSU
Gainward BLISS GeForce 8800 GTS 640MB GDDR3 HDTV/Dual DVI
GeIL 2GB (2x1GB) PC6400C5 800MHz Value DDR2 Dual Channel Kit
Intel Core 2 Duo E6300 "LGA775 Allendale" 1.86GHz (1066FSB) - Retail
Gigabyte GA_965P_DS3P (Socket 775) PCI-Express DDR2 Motherboard
Corsair HX 520W ATX2.2 Modular SLI Compliant PSU (CMPSU-520HXUK)
Seagate Barracuda 7200.10 250GB ST3250620AS SATA-II 16MB Cache - OEM

soon as i see the fan not working i switched it off

any opinions?

Thanks

Uhtred · 18 Apr 2007 at 13:35

have you tried plugging it into a different header? if it still doesn't work then the fan is broken. Does it spin up at all when you turn it on?

Simian · 18 Apr 2007 at 13:36

Silly Question... But Did you plug the CPU fan into the Fan-header marked 'CPU' on your motherboard?..

Sim

Lalumi · 18 Apr 2007 at 13:38

There is only 1 slot for the CPU fan or do you mean i could try the other 3 pin slot which i use for the side fan? when i start it up, it trys to spin like moves a CM then stops. ofc its labelled CPU FAN

michael baxter · 18 Apr 2007 at 13:38

Double posting?

http://forums.overclockers.co.uk/showthread.php?t=17718601

If you have fan control enabled in your BIOS, it may turn the fan off when cold. Check your BIOS, and turn it on to test.

Lalumi · 18 Apr 2007 at 13:39

thought it would be better in this section

Lalumi · 18 Apr 2007 at 14:00

wouldnt keeping it on without the fan working damage the cpu?

IAmATeaf · 18 Apr 2007 at 14:11

How many pins does the fan have as the CPU header on the mobo has a 4 pin header so if it's 3 pins are you sure you're plugging in the fan into the correct 3 pins, check the manual for more details.

Lalumi · 18 Apr 2007 at 14:14

just checked and its in CPU_FAN 4 pin

Lalumi · 18 Apr 2007 at 14:31

i have the 24 pin from the PSU on the mobo and the 8 pin all the fans are in the right places yet only the side fan works.

Lalumi · 18 Apr 2007 at 14:48

anyone have any other idea's?

melbourne720 · 18 Apr 2007 at 14:52

I'd just connect it to a molex via an adapter and not worry about it. You BIOS boots without having to wait for the CPU fan, so no problems there. You can always use a fan controller to limit the speed of the fan.

Or connect to another fan header.

michael baxter · 18 Apr 2007 at 14:53

Lalumi said:
anyone have any other idea's?

Have you checked the BIOS as I suggested above? It won't overheat in the time it takes you to check, as the heatsink will take a while to warm up.

Lalumi · 18 Apr 2007 at 14:56

will check now then thxs

IAmATeaf · 18 Apr 2007 at 15:05

What about my 3 pin - 4 pin suggestion above, did you check that?

Lalumi · 18 Apr 2007 at 15:10

yup its in the 4 pin

Lalumi · 18 Apr 2007 at 15:24

ok i got into bios and the fan cooling thing its off so it should spin, i was checking the temps of the system/CPU and they are staying around 19 degree's without the fan even moving so thats kinda wierd.

elite · 18 Apr 2007 at 15:48

lol in some bios settings you can stop the fan spinning unless the temps go above 25c and once they go over 50c fan spins full speed.