Okay, so I've finally heard back from Asrock.. They attached a later version of the BIOS to me on an email (V1.30B).
Weirdly their latest version that I could find on their website was V1.20B which is currently the one my motherboard is flashed to. They have also now told me that this later version has the "4G Decoding" feature in the settings.. !!
I am going to flash the BIOS later tonight when I have some free time and with a bit of luck I am praying this will resolve everything. I will keep you all updated with the progress!
Glad you actually got some help from Asrock. Good luck with the flash.
Well to no surprise the flash to the later BIOS didn't work with 4G encoding enabled, I've emailed them back to see if there are any other solutions.
I've also ordered 3 more PCI risers (molex) type to see if some bizarre reason this will fix it. If that doesn't work then i'm going to RMA the board and try again.
If all else fails I will buy a different motherboard completely, do you guys have any good suggestions on a decent mining socket 1150 board?