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Question about ASUS K8V-X SE Motherboard

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NO Power up at all except standby light

I've just got a K8V-X SE new CPU and RAM and i can't get it to boot at all, no CPU fan nothing, no light on LAN just the motherboard standby light comes on. Its all compatible, I've checked the system panel a million times all fine. I'm at a loss. Does a brand new AMD CPU need thermal compound on the fan even though there's some grey stuff already on it? I don't understand why even the CPU fan isn't coming on (and yes it is plugged in!), I'm going to try another Power Supply tomorrow but does anyone have any suggestions? I've built a good few computers (no AMD tho) and have never come up with this sort of a problem. Any help would be great. Thanks

Posted by Clarissa Hampton on


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I know this is a very old thread, but I just now have the very same problem and know how I fixed it. Make sure the floppy power lead is connected snugly with the correct polarity (mine is keyed, but easy to connect incorrectly), and make sure the floppy ribbon cable is connected snugly to the drive with the proper polarity. (The mobo end of the cable is keyed but the other end is not, in my situation.) SANDREW is also correct that you must connect the 4-pin 12V power lead from the power supply. You must have at least a 300W power supply and preferably at least 350W if you have more than just a minimumly configured system (that is, you've loaded your system with goodies).

Posted on Jan 02, 2009



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I know you say you have the cpu fan connected and assume you have the front panel power switch and restart cables etc.. connected, but have you connected the processor power supply lead from your PSU to the board as Sempron have a seperate power lead to the board to power it up, unlike the old Athlon processors. If you bought the CPU, Heatsink and fan together then it will already have thermal paste on the Heatsink, so don't apply any more. Hope this helps, as I don't wish to teach you how to suck eggs! Please rate this solution

Posted on Nov 09, 2006


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