Chaps,
Well I finally got to the bottom of the memory issues with this board and have to say that wazza was right on the money.
I removed the motherboard from the case on Sunday night. When I removed the CPU I did notice that something did not look right with one of the pins. It was hard to tell without magnification or the right lighting, but for sure one of the pins looked either bent or out of alignment.
Large Pic 1
Large Pic 2
How this has happened is beyond me, to say I was very careful and cautious when placing the CPU into the socket is an understatement. I should also add that when I first got the motherboard, when I was plugging in the fans, I noticed that the CPU_FAN and CPU_OPT header pins were also bent outward about 2mm or 3mm. Rather than just return the motherboard over something so petty, I simply use a pair of tweezers to straighten them out.
I must state that this particular motherboard was not purchased from Overclockers, but from another well known large retailer local to me.
So I took the motherboard into the customer services department, and the member of staff at the desk takes the motherboard out of the box and checks it over. He notices right away the bent pin and tells me that I am not covered for this kind of damage since I did not buy insurance.
I state that I had not damaged the pin, that I had been very cautious, I also asked him if that was the case why was only one pin damaged? Surely it would be a few in the area given the density of these things? The staff member also states that he has never seen a motherboard come from factory with a damaged pin.
I am also informed that he gets this all the time, customers damaging the pins and claiming they had not done it. I was then given the option of returning the motherboard back to Gigabyte to replace the CPU socket, at a cost of £24 plus postage.
I was reluctant to do this, and annoyed that I have been sold a damaged motherboard.
Finally, he offers to give the motherboard to an engineer in the workshop who has some success straightening pins on motherboards, and he may be able to straighten it, but he makes me sign a disclaimer first. I sign the disclaimer and he disappears for ten minutes.
He eventually returns, and I am expecting bad news so was very surprised when he said they were going to exchange it on the warranty.
My only guess is that the engineer saw the damaged pin and declared that it not possible that I could have done it, that it must be a factory quality control problem.
The lesson here I have learned here is to always check the CPU socket pins before installation, and do not accept a motherboard even with the slightest of damage (i.e. the CPU fan header pins).
All good yes? No, I install the new motherboard and the exact same problem, I cannot believe it.
So I check BIOS, F3, update to F6 - no change. I set XMP to Profile 1, no change.
If I can muster the strength I may check the CPU socket pins again, however I did check before installing CPU and they looked perfect.