X79A-GD65 (8D) another error in DIMM ? after MSIHQ error 654...

Question

Hello, on my, X79A -GD65(8d) , is it possible that a DDR slot , namely the dimm7 is"dead" ?
Let me explain: I have long been a lot of 4x4 strips corsair ddr lp case 9 9 9 24; famous CML16GX3M4A1600C9 in position DIMM 1, 3, 5 , 7 . For some time I had unwanted BSOD , even after rounding the intel rapid storage tech ... I flash my bios remained in 1.8, version 4.7 and ME 8, as you know . So I made ​​a memtest without removing the bars , I got a good red train errors. So I've tested one by one in DIMM1 position , one of the bars was dead. I had an exchange as lifetime warranty , replace new in the same places , and for the sake of rigor, recovery memtest . And rebelotte , an error in red train. Annoyed , I test each new modules in DIMM1 position and then, no error , the 4 bars are goods. Well ...
I give a quick vacuum with a fine brush for dusting. I replace, restart my stuff , and bam, another BSOD after a few minutes. that was yesterday.
This morning I rekindled my stuff and now it boots loop with error code 67 ( which corresponds to " late cpu initialization" ... : pt1cable : , if I view the tiny panel lED on the motherboard ( did I read in common sense ? .
oookkkkkk... Intuition torments me , I cut the power supply , remove the strip in DIMM7 position, the others are in position 1, 3, 5,  and back on the thing . After a buckle boots , he finally starts on the F1 panel proposal to return ds bios setting for 3 bars , and after, boot on Windows 7, normally.
So questions:
- What can a ddr slot is dead?
- Can i put my 4 modules DDR DIMM in position 1 , 3, 5 , 7 ( DIMM 2, 4 , 6, 8 for example, or 1, 2 , 3, 4 ? ) ?
Note that I use the XMP profile bars , which prevents me from doing a manual setting that I 'm not sure to succeed perfectly ... And I check the profile gives me good specifications barrettes, I found in CPU -Z.
My card is obviously no longer under warranty as purchased in March 2012 ...
thank you and good week if you read me tomorrow ... ;-)

Answer 1

I removed all the hardware, I checked the status of the socket pins , I do not see any damaged pins , I put together the CPU and the heatsink , put the mobo on a cardboard box , plugged the video card, keyboard, mouse and makes a clear cmos . After a restart with 4 DIMM modules in position 1, 3 , 5, 7 I always get the error code 67. I placed the strips in position DIMM 1, 2, 3, 4, and the mobo has booted, I could go into the bios redo my settings ( including: XMP enabled). CPU- Z actually gives me 4 bars connected in dual bios, but it works ... I do not know why dimm7 no longer works . There is a set of two LEDs on each side of cpu leds "DDR phase" both are on the left (DIMM1 side 4), one is on the right (side dimm 5-8).
This is the second motherboard MSI X79A - GD65 ( 8D ) in two years , the first having had another problem a year after purchase, one I also dates a year. I've never even used the OC buttons (2 radeon hd 7950 provide me to do), I do photo and video editing,  I work with it for associations and i play games. Nothing particularly stressful.
I have a GA- X48T -DQ6 with a core 2 quad Q9550 for 6 years, I've asked a lot and now my son uses it with pleasure. I never had any problems with it. I still have two Asus : A7N8X Deluxe and A8N sli deluxe with their Athlons , my wife has an Asus M2N -E SLI ... I mounted these motherboards, and they work perfectly .
I am somewhat annoyed... Mmm...  ("très en colère" we say in french) by this MSI card and I think frankly that the price / quality ratio is not in his favor. 
Thanks  .