I created a thread on Tomshardware, but haven't been able to resolve this - http://www.tomshardware.com/answers/id-1873773/question.html
Additionally, everytime just before the blue screen, I hear a short beep from my motherboard and then 2 secs later, the Blue Screen.
I used SeaTools to test HDD and did the Fix All Fast, S.M.A.R.T Check and Short Drive Self Test and all passed.
I did a memory test using a bootable USB Stick which passed too - I used MEMTest86+
Please help.... this is very frustrating, as it is a fresh install and I am going to buy a GTX 760 to play games but won't be able to if I keep getting Blue Screens such as these.