I assume you changed to sata port you have it plugged into?? If not, try that. Then if no joy, I would start to think about the MB having an issue with the sata drivers first, then he possibility of an issue with the actual ports, or chip set. Seems like I have read somewhere that drivers for the sata have been goofed up and reloading them can fix the issue. Dont do anything drastic until someone with more experience answers your post. I'm no expert.