Hiya folks.

Dunno should this be RMA'd or not.. What you guys think?

Maximus V Gene (bios 1707)
Intel Core i7-3770K @stock
Corsair Hydro H80 (p/p)
Corsair 16GB (4x4GB) 1600MHz CL9 1.5v (CMZ16GX3M4X1600C9B)
Gigabyte GTX 580 SOC 1536MB
Corsair AX850 PSU

Problem:
Less than a year ago I built myself another system, this one dedicated to playing games and based around the awesome MVG. For a fair few months it's been completely fine, completely trouble free until yesterday. After restarting the system due to a random crash, I'm unable to boot all the way into windows without any issues. It seems to post fine, boots windows all the way through until the logo appears, then just before windows desktop comes, it'll stall. My display will power-down into power-saving/sleep mode but the system remains on. Fans whirling but no-one home.

Now, I initially thought it's my GPU that's playing up, so this morning I tried swapping them over. Reboot, nothing... Again, it'll post normally, boots windows until the logo appears and disappears then stall.

After some thinking I decided to try both cards in the other PCIe slot (outer one) and to my surprise the machine boots fully. All the way into windows, right into the desktop as if nothing was wrong what-so-ever!
However, put the card(s) back into the (inner slot) and my problems will reappear.

WTF?? 😮 😮 😮 Odd eh?
I don't understand what's going on here.. Is my mobo dying?


Wanna hear the oddest thing?? I did a full system re-install onto spare drive. Both GPU's will work fine in any slot until the GPU drivers are installed then the above problems will re-show it's ugly face... BUT only on the inner slot. What Gives??

Is it time to RMA the motherboard?