What exactly do you mean with Driver Clash?
Did you also check the cabling? Perhaps a cable is faulty or has been worn out.
Also, can you tell me if you have any older parts in your computer right now? I assume that you have got two parts of everything in the list you stated. If that is the case, it could be that you now have parts of A mixed up with B, in which case you will never find the faulty component and/or problem.
You could also try resetting the BIOS. (See the computerhope.com database for more information.)