New PC - CPU fan does not spin on boot

[shadykidd]

Well I built my first PC this morning, and when I hit the power switch, everything started running except the CPU fan. I pushed the power button off, then the CPU fan spun for a quick second and stopped. The fan is plugged into the CPU_FAN slot. Any idea what could be wrong?

My Specs:
Core2Duo E6600 with stock cooling
Gigabyte DS3
Enermax Liberty 500W

 

[shadykidd]

I just tried plugging the fan into SYS_FAN instead of CPU_FAN, and it seems to work ok. Is it ok to use SYS_FAN instead of CPU_FAN?

 

[Bobthelost]

Yes, the BIOS will probably throw a tantrum and it'll make fan speed control a bit more complicated but as long as the fan is spinning it's ok.

Edit: Try make sure you've got Qfanturned off in the BIOS, could be trying to undervolt it too far.

 

[chairbornrangerx]

check your bios for a smart fan control, its possible its just not hot enough for the fan to turn on

 

[mayest]

I've got the DS3 and an E6600 as well. When I first turned on the system, the CPU fan didn't budge and I was concerned. However, after a few minutes it started running. I haven't had any overheating problems (in fact, it runs very cool) so I assume that the fan just isn't needed for awhile.

I say put it back on the CPU Fan connector and just give it a few minutes. Run EasyTune and watch the temps to see what happens.

 

[Ausm]

Make sure you turn off monitoring the CPU FAN in the bios because it might shutdown the mobo with no reading from the CPU FAN header.

Ausm