ASUS P5Q3 Not Posting

wargigas

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Oct 14, 2008
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ASUS http://en.wikipedia.org/wiki/Asus P5Q3 http://www.newegg.com/Product/Prod [...] 6813131344
PC Power & Cooling 500W Silencer http://www.newegg.com/Product/Prod [...] 6817703015
Corsair XMS3 2x1Gb DDR3 1600 PC3 12800 http://www.newegg.com/Product/Prod [...] 6820145199
XFX Geforce GTX 260 http://www.newegg.com/Product/Prod [...] 6814150310
Intel P4 560j 3.6Ghz 800Mhz FSB

So my new rig isn't posting. When I turn it on it runs for about 10s, restarts itself, and runs indefinitely. It won't post, won't give me any beep http://en.wikipedia.org/wiki/BEEP codes. I tried the RAM in DIMMs http://en.wikipedia.org/wiki/DIMM 3 &4, then 1 in 3 and 1 in 4. I tried it with no memory at all and same thing, no beep codes, no posting. Also put in my old eVGA http://en.wikipedia.org/wiki/EVGA Geforce 8600 GT. I called ASUS and their tech guy was dumber than I was. He had no suggestions whatsoever other than suggesting that I send it to them to flash the bios (which I can do myself w/ the USB flash http://en.wikipedia.org/wiki/USB_flash_drive utility).

I'm guessing that either P4 or the RAM isn't compatible. I took a chance that the P4 was compatible since on the ASUS website for this board it does not list P4, but all of the other P5Q3 versions did. The ASUS tech couldn't confirm either. He said their spec lists didn't reference the P4 one way or the other for this board but since the others did and the differences are small he assumed it would be fine.

If that's true, and not that he instilled much confidence in me, I guess it's probably the RAM. Looking more closely (which I should have done first) the ASUS manual says that it supports CM3X1024-1600C7DHXIN(XMP). I have two sticks of 1600C9DHX (differences being CAS Latency 7 or 9 and DHX vs DHXIN). I've read differing reviews but most says that RAM has been a big problem for this board. Some have said it's very particular but others have listed the same RAM I'm using and it's working fine.

Will bad or incompatible RAM cause a rig to not post at all? Even so, wouldn't it give a beep code when no RAM is installed? Since it's not giving a beep code when there is no RAM is that an indication that the MB is a dud?

Any suggestions would be appreciated