My ipad 2 goes to a black screen for up to 30 seconds or so between the boot screen and the lock screen. Yesterday, it crashed twice while booting before I got it working. I ended up pressing the home button-power button combo and then it started to boot. It crashed, I did the button push, finally got it booted, then reset my settings as Apple directs. Now, it boots but the mystery black screen thing happens. It started a little bit actually before ios 8 but got a lot worse after. Also sometimes when it's in sleep mode, it can take several power switch pushes to wake it up. I don't get it. Why would my settings suddenly affect something when they didn't before ? Could ios 8 have made things worse? What might have caused it to begin with? I consider myself to have cared for things well though I'm told my screen could stay cleaner. It had a couple minor bumps but in the protective case and seemed ok...it's been shook a few times...but as far as I know, never enough to cause damage. Any thoughts on what's going on? Should I try a factory reset?