Hello. I own a asus g46vw and I decided to upgrade it to a new Samsung 840 ssd evo . Now the problems is I tried the migration tool and it didn't work i tried re-installing windows didn't work now i notice bios wasn't showing the ssd and the setting were fine it was set on ahci. i tried the ssd on another computer works fine i tried my old hard drive works fine i tried another hdd and it works fine. I updated the ssd firmware it didn't work i updated the bios didn't work. maybe you guys can help me Im pretty desperate.