Looks like pin AU38, this document says it has something to do with DDR3 (Page 95): http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/3rd-gen-core-desktop-vol-1-datasheet.pdf
You can deduce the pin number from the diagram in that document, or based on this image: http://img.clubic.com/03857644-photo-intel-socket-lga1155.jpg
There's a good chance that pin contact is the problem, but beyond that, I don't know.
Thanks a lot for the info. Sorry for the late reply though.
I am in the processor of RMA'ing the Board. Keeping my fingers crossed.
Thanks again, appreciate it.