[REQUEST] Unhide Hidden options ASUS H81M-E/M52AD/DP_MB

Hi im hoping im in the right Forum ^^

is searching for an unhidden Bios von that mainboard because i have the problem
all my Grafikscards are connecting only at x4 in the x16 slot
only one or two of my older GPU´s "an gtx 560 and an quadro 2000" connect at x16 in that same slot
i hope that unhide all options bring back the (connect anyway´s at x16 option ) in (advanced / system agent configuration / NB PCIe Configuration)

to the mainboard its an ASUS H81M-E/M52AD/DP_MB 
(That Mainboard)
Bios :
  Asus m51ad.zip (Size: 4.97 MB / Downloads: 0)
i thinks its AMI UEFI
if not please send me to the right Section 

i hope i can Upload a copy of the direct backup of my bios (if i can create one )

~Dj-Elroy