Asus P5WD2 Compatibility issues, please help

[PCRHitman]

i've just upgraded my system and trying to put together the following bits

Asus P5WD2 Premium 955x Chipset
Pentium D 930 (3.0Ghz dual 2mb cache etc)
XFX Geforce 7800GT "Extreme Edition"
Corsair XMS2 DDR2 6400

I plug it all together, with the P8 8 pin connecter for dual core, the 24Pin mainboard power cable for PCI-E, CPU and Northbridge are watercooled. Plug in my 7800GT as normal into Main PCI-E 16x slot plug hard drives in (3x SATA) My Audigy 2 into PCI and all the other needed motheroard connectors and extentions etc. and power up. (Oh and plugged it the power to the graphics card)

The first time i did this i was using a tagan 480W, it didn't post, i couldn't even hear my hard drives power up, (didn't think of lack of power to begin with). so took out ram to see if i got any beeps.. no beeps

Took out GPU to see if i got any notion of life from it, and my hard drives powered up, but thenmy motherboard began to smoke (a little relay underneeth th DIMM slots). so that motherboard went back, and they sent out a replacement.

Thinking it was a lack of power i decided to get hold of the Seasonic S12 600W. to be sure that wasn't the problem. set it all up again, and hay presto no posting, hard drives weered this time though. Reading the manual i noticed that some cards didn't like the main 16x PCI slot onboard, so i thought i'd try putting the card into the secondary 4x PCI slot as from what i had read every card listed in the manual had passed in that. and guess what!

The board started to smoke again, same relay undereath the DIMMS.

I have testing the card in a mates computer and that works no problem. but i don't have any way of testing any of the other parts.

Is this a compatibility problem or is it something else that i seem to be missing. Coud someone shed some light on this for me, any idea's to what the problem may be.

Thanks, any help would be very much appreciated.

 

[PCRHitman]

Thanks guys that was a lot of help, i would agree that under the circumstances it very much looks to me like this one is a ram problem. I've RMA's the mobo cpu and ram all for testing and they are going to make sure i have all working parts sent back to me.

Fingers crossed, i'll be 3rd time lucky!

(it all should fit, as i'm getting this upgrade due to my watercooling system leeking on jan friday 13th and killing my 6800GT )

 

[PCRHitman]

Right, the problem has been identified.. and its an odd one.

I RMA'd everything, and everything came back working apart from the motherboard which had burt out of course. So i deciede to just plug in the essentials, as you should do, but i can get a little impatiant.

Any way everthing thing worked fine this time round, as i slowly add things to the board bit by bit, and its all working smoothly until, I put my zalman northbridge waterblock onto the board, after which it won't post!! so i take it off and it works fine again . so currently havn't solved that problem, i'm probably just going to take the water block out of the system as there doesn't seem that much point in it.. although if anyone could shed some light on the problem so that i can use it, that would be great as i think the northbridge is overhheating slightly, which may be causing me some problems.

Question though, to those who may be able to help me.. although i havn't fiigured out everything the P5WD2 has to offer... but when i boot it comes up saying that my ram is running at 5400(i think :S, its 5*00 anyhow) not 6400 which it should be at, and the board is ment to support DDR2 800? anyone know why this is

Thanks a lot

 

[PCRHitman]

Sadly that isn't the case, as the motherboard in question is a fanless board

 

[PCRHitman]

Cheers, that was very useful - The problem with the ram was it doesn't auto detect Ram at the frequecy in the bios it needs to be set manually under Advanced - Jumper Free Configuration - and Set AI Overclocking to Manual and then the Ram can be set to DDR800.

 

[PCRHitman]

That is what i thought, and thats why i did it.. but i'm assuming there is something about the new PCI-E slot, extra power or something that burns out the board :-S . to take a stab in the dark..