A couple of days ago, when turning my Xbox off, it took a minute to shut down and was making a very faint beeping noise. When I started it up that night, it gave me the E 86 error message. After looking at the Xbox Support articles, I decided to test out the issue by unplugging both my USB flash drive, and my internal hard drive. When started with nothing plugged in, the Xbox booted fine; when started with just the USB plugged in, it booted fine. When I started it with just the internal hard drive plugged in, it gave me the E 86 error message. So, what exactly do I do about this? Am I stuck consuming the money spent on an internal hard drive? If so, is there any way to retrieve the data off of the defunct hard drive?
Details: It's an Xbox 360 S, purchased new, never dropped, has good ventilation (so far as I can tell), has never had anything spilled in/on it, is about two and a half years old, was purchased from Target. Hard drive is a 320 gig internal hard drive, was purchased new, has only been used in this Xbox, is roughly a year or so old, was purchased at GameStop.