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help, please! Gigabyte MB problem

V

vze3rvb2

n00b
Joined
Jul 27, 2006
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28
I just installed a new Gigabyte GA-EP45-UD3P MB (to replace an ASUS P5B) and something weird is happening.

I carefully (I think) assembled it and all 3 case fans except the CPU fan spin up when I hit the power switch. I checked to be sure that the 4 pin connector was in and tried again. No go. I then connected an extra heat sink fan to the same CPU fan slot - no go. But this is strange: when I turn the power off (via a power strip) the CPU fan spins up as if it got a brief surge of power. This was the case with both the mounted CPU fan and the external test unit. How can this be? There is only one way to connect the CPU fan power in an ATX board . . .

I then disconnected all the HDs and the optical drive just to see - no change. Help - I need to make this work soon! Thanks.
 
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That's normal on Gigabyte motherboards, after a minute or two the CPU fan will spin up - because the CPU's temperature reached a threshold set by the manufacturer.
For testing purposes in the BIOS under the PC Health Status set the CPU Smart Fan Controll to Disabled, and the CPU fan will rotate at full speed. ;)

My recommended settings for CPU fan control are:
CPU Smart Fan Controll: Enabled
CPU Smart Fan Mode: PWM
 
Agreed.
Although even with CPU fan control disabled, my CPU fan still doesnt start immediately, it has a few seconds delay.
(Mobo is GA X38-DS4)
 
It doesn't post to BIOS, nor does the CPU fan start, even after 10 minutes. Could this relate to the DDR2 667? All my components were working before I replaced the motherboard.
 
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Try the motherboard out of the case and make sure it works. Easy enough to do just the time of removing everything and doing it. If it works then, well you know it's good to go.
 
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