iPod Classic white screen

A few weeks ago I turned on my iPod Classic 160gb and all I saw was a white screen. This is a common problem, I believe. The usual solutions are resetting the device and restoring it to factory settings. Neither one worked. Curiously, the iPod still played music. Someone suggested that running down the battery could fix the problem. Well, that's not so easy. Even after the device no longer had the juice to play anything, it remained responsive. Finally, I made appointment at the Genius Bar. After looking at my iPod and determining that there was no water damage, they told me that they will replace it. In a couple of days they called and said that the replacement has arrived. The key thing here was making sure that you have registered your iPod with the correct purchase date. This indicated when the warranty started. Interesting, nobody ever checked if I had a receit from Costco where the device was purchased.