I have also RMA'd my mobo, but when they set the mobo up and installed 6GB of RAM the board picked up all 3 modules...

I also checked the CPU socket for bent pins, and they were all fine.. I checked the socket every single time I had to remove the CPU for any reason and there is definitely no bent pins in there...

If I were to RMA the mobo directly with Gigabyte UK, and they found the board to be faulty, would they actually replace the mobo for me, or just repair the current board??

I sent the board back to the e-tailer for testing, but so far their methods of testing have been extremely poor.. to begin with they told me that the board wasn't faulty because they installed 6GB of RAM and it all showed up, they never installed Windows and tried any stress testing, they just viewed the POST screen...

Then I called up and explained how it used to see all 6GB of RAM for me when I first set the board up, and how it was due to the board being really unstable that I shipped it back to them, so they ran Prime95 Blend for 1 hour and tell me yet again that there is nothing wrong with the board...

I then had to plead with them to leave the system setup overnight running Prime Blend for the problems to showup, so that is what I am awaiting the results of as we speak... I am praying to god that the board acts up for them this time, because I am 99.9% positive that it is a faulty mobo...

With the 3 weeks I spent with this mobo and all my testing, everything points towards the mobo as being the problem... so if they turn around and tell me that it isn't faulty, I have no idea what steps I can take next??

I am also annoyed at the fact I had to pay £21 to ship the mobo off, and now I am also expected to pay them another £23 to get it sent back if it isn't faulty... that is a joke IMO... When I RMA'd my CPU and it was found not faulty, I wasn't charged by that company to get my CPU back, they covered those costs themselves...

The only thing I can think of doing next if they say it isn't faulty is to test it out again at home, and if the problems are still present with me, then I should ship it off to Gigabyte to see what they say...

But these problems have been with the mobo since the first day I set it up, it initially had F4 BIOS installed, and I have a D0 chip, but the board still booted up with F4, even though Gigabyte say you need to have F5 minimum for proper D0 Stepping support, but I did try some stress testing with F4 BIOS, and it was extremely unstable with that BIOS, so I went onto F6, again the problems were still present, but there were times when the system would Prime away overnight without any problems, but then the next day with the exact same settings the system would crash within 10 minutes of Prime...

Then when F7 BIOS came out, I installed that, and it didn't really change anything, the system was still unstable.. then someone made me aware of beta BIOS'es from tweaktown I think it was, so I tried F8b and as soon as I started Prime it would BSOD on me every single time... and all this is at stock frequency remember, I haven't really done any overclocking on this thing so far... because of my inability to get the system stable @ stock!!!

Does anyone here have any idea as to what else could be causing my problems??

Like I said, I have tried as many different hardware configurations as possible with all the hardware I have here at home, and every single one gave me the exact same results... also with the 1st DIMM channel dying on me and then miraculously working again when the retailers set it up is a mystery to me...

I hope that someone here could guide me in the right direction with where I can go from here with this rig, because I am at a complete loss as to what I can do now...

The only hope I have left is that the tech who is testing the mobo actually gives the board a good thorough testing and that he also experiences the same issues as I was having... then I will get a replacement mobo sent out and everything will be fine, but if they only test if over the course of 1 day and it behaves itself like it has done for me a couple times in the past, I dont know what else I could do...

Thanks again for your replies so far people, it is much appreciated...

P.S. here is a rundown on all the hardware I have used for testing in total:

GFX cards: 8500GT 512MB, 8800GTX 768MB, GTX280 1GB (All cards have been tested in another machine and each one works perfectly)

RAM: 3 x 1GB Corsair XMS3 1333MHz, 3 x 2GB Corsair Dominator 1600MHz (tested with stock timings and much looser timings on both sets, each module has been tested indivdually and also as a set running memtest bootdisc and they are all fine)

PSU: Hiper Type-M 630w, Be Quiet! Dark Power Pro 850w. (lots of people had told me the issues I was experiencing was probably caused by my old Hiper, so I went and bought the Be Quiet! only to find the problems were still present!!!)

HDD: I have tested the system using 3 different SATAII drives, to see whether it was a faulty drive that was causing the problems, but again the issues were still present..

I tested the rig using about 5 different SATA cables as well to see if it that made any difference to, but nothing I tried made a blind bit of difference...

The rig was built up outside the case with the absolute bare minimum connected to it, also tried using just one RAM module (this was before the RAM channel died on me) installed in the first white slot, and I thought that everything appeared to be OK with just one stick installed, so I decided to leave it Priming overnight, but when I returned to the PC about 7 hours later, it has BSOD'd on me again...

As you can see I have tried lots of things with my rig, and nothing I have done seemed to make any difference at all..