I have a Dell Precision 490, and when I boot it up, it will say no hard drive attached. I remove the side of the case, then re-attach it, and it is able to find it. Then after a few reboots, it will say it can't find the hard drive, and I just remove the side of the case again, then re-attach it. I don't see this being a long-term solution. How can I fix this?