I'm having a MAJOR problem with my hard drive. Sometimes it reads the primary master, and sometimes it doesn't. When it doesn't, I have to reset it in the set up menu, and then it works fine. When it won't recognize it, I have not done anything that would cause this change to happen, it seems to reset itself when I turn it off. I am in no way computer literate, so that is as much as I can tell you. My questions to anyone are: Why is it doing this, could this pose serious problems if not repaired, and how can I repair it (if thats even possible).