Yeah, I put in the Titan just to see and it has done nothing, also I did put in the AMD card and nothing has happened, so I believe that this could mean that it is either the PSU or Mobo @Anghammarad Wait could it maybe be the RAM and the reason why I say that is because this has happened to me before and sometimes I just moved the RAM and the pc booted right up and it was all hunky dory.