Everytime i switch on my xbox i am prompted to download a system update over and over again. The update is fully downloading then restarting the xbox as it should, but every second time it will go to the download screen for a second then restart the console again. As a result i cannot connect to live and i sometimes recive the message that parts of the xbox are missing or corrupt. To begin with it would update two or three times then work but now iv done upwards of 20 updates in a row.
I have cleared the system cache, formatted the hard drive, and even removed the hard drive and used a usb instead. But nothing seems to work. Please help.