I went to turn on my computer one day and I got three messages all saying the computer could not read all three of my drives then I got a message saying could not load OS. So I put my hard drive into my other Computer and it worked fine I even tried to put a different hard drive in the one that did not work and I got the same messages. I checked all connections and changed all the wires nothing seems to work am I missing something or is my motherboard bad? Help please