I am trying to reinstall Win 7 Pro my O/S on my old Samsung 840 pro I can not get a good reinstallation, it has to be hidden files 3rd try to reinstall my system, first it was cant install to MBR disk ok so I reformat it into a GPT case solved right " NO " I don't think so now it says that after I have formatted it into a GPT it says it cant install it on a GPT disk I have six internal drives 4 are 3 Tb, 1 x 1 Tb for back up on my system plus 3 External drives 3 TB and of course the Samsung 840 pro for the operating system, I download AOMEI Partition Assistant and I find that I have both MBR and GPT formats everywhere the mother board is ASUS Sabertooth 990 FX R2.0 CPU AMD fx 8350 2 x 8 Gb Corsair Vengeance 1600 MHz DDr3, NIVIDA GeForce 580 GTX Corsair Carbide 400R Case, PSU is Thermotake 850 and so on. I have checked the Bios boot UEFI it is in Legacy GPT I think I have been at this for a few days and I am just about ready to fling it out the door " HELP "