I'm not sure if this is a common issue, but the title says it all. This afternoon I opened up my iPad, and the screen was white. It responded to the sleep wake button, it responds to auto-brightness, and it makes that noise when it charges. And that's all I've noticed. Tried activating Siri but it didn't work. Yes, I have tried a hard reset like 4 times, and it has just gone back to normal. Does anybody know what I can do about this?