I've had a Samsung Galaxy Ace for a year and a half and have never had any problems with it. It gets dropped once or twice a week, but besides that it stays pretty safe. Last night I went to restart my phone and when I turned it back on it showed its logos like it always does before bringing me to my lock screen but this time it got stuck at the Samsung logo. It pulsed white and blue for around 30 seconds, then goes through all the logos again and it does this on loop. I've tried removing the battery and trying it, removing the SD and SIM cards and trying it, and no luck. I've got no idea what's wrong... any ideas?