Things You'll Need
Instructions
Turn off your Xbox 360.
Turn your console back on. For many gamers, this fixes the problem. The popular theory is that the E68 error results from shorting circuitry within the hard drive or memory cards connected to the system. Turning of the console can reset the short and fix the problem. This may not work every time.
Turn off your Xbox 360 once more and remove all peripherals. This includes hard drives, controllers and memory cards.
Reattach the hard drive and turn on your console to determine if other peripherals are the cause of E68.
Turn off your Xbox 360, remove the hard drive, and turn your console back on. Connect your Xbox to the Internet with an Ethernet cable and insert any game released after 2007. Your Xbox will automatically download the latest firmware update from Microsoft. After receiving any update, turn off the console, reattach the hard drive and try again.
Try another alternative. Some gamers find success by applying a small roll of aluminum foil to metal pins within the hard drive assembly. This procedure requires a few tools to perform, but has the potential to damage your hard drive beyond repair.
Your final two options are to send your Xbox off to Microsoft to have your console fixed, or to purchase a new hard drive and see if it solves the problem.