Please forgive me if this has already been discussed. But does the Nexus 7 enter a "deep sleep" if unused for long periods of time? (i.e. 2 days) I have found that my N7 seems to turn completely off if not used for a long time even if the battery was fully charged and I have the wifi turned off when asleep. If this is the case is there an easy way to "revive" it or get it back on? I found that pressing the power button doesn't work, and I have to try several different methods. (plugging in, pressing all the buttons simultaneously) It just doesn't want to come back on. Generally I get it up and going again. But this has proved to be frustrating. Any ideas from the experts?