Yeah I'll be doing it all from scratch again.
'Who' installed the RAM has relevance so far as you said 'You do it anyway', implying that I had installed against advisable guidelines. My point there is that, seeing as I purchased it like this and it was running fine, 12GB didn't seem like an issue. It was only when you said it was out of spec that I knew this could be in any way a problem. I was under the assumption that, if the computer recognises it, then it's fine. I thought the BIOS had a cap on RAM usage that would fail to recognise any more than xGB (8 in this case).
Maybe you should try helping without assumptions or condesention? As I said, there is no disputing your knowledge and experience with this, but your attitude is certainly out of spec.
Seeing as you are a moderator, could you please delete this thread as there are no answers for others in here, and I won't be posting anything in it again. I apreciate you taking the time to answer, but it was soured by your attitude.