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Mobo Lights Up Fans Don't Start

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#1 tizzyloucat


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Posted 08 March 2011 - 09:49 PM

I posted earlier - but posted in internal hardware...Probably wrong forum. Building on boared outside of case. This is what I have done.

I have connected CPU, heat sink and fan to MOBO
Power supply is connnected to MOBO

I power on and the MOBO green light comes on, but the fan on the PSU and on the CPU fan does not start.

MOBO: Asus M4A89GTD Pro
PSU: OCZ 600W ModX Pro

The PSU was pulled from a working computer. Working computer did not have additional 8 pin connector. So, it may be a PSU problem although, the PSU is less than 6 mos old.

Any suggestions?

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#2 Baltboy


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Posted 10 March 2011 - 09:31 PM

If the motherboard has an additional 4 or 8 pin connector it must be connected. That connector supplies power to the fans you mentioned as well as the processor.
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#3 tizzyloucat

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Posted 11 March 2011 - 09:58 AM

Thanks for your answer. I have made that mistake before, so that is not the problem. ASUS told me that the CPU I was trying to use was not strong enough to power the board. I got a list of compatible CPUs after the fact and ordered one that is supposed to work with it now.

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