As I said, there isnt much more advice I can give you. No matter what happens the error will quote ntoskrnl.exe, as that is the process attempting to read the memory.
Again I would suspect the ram, but its not easy to tell. Check the voltage the ram is set to, or set it manually your self. You don't say how much ram you have, just that you have at least 1 8gb stick (you really should have two for dual chan mode) try running with just one module then the other.