Alright panic mode off. Found a thread on Neogaf and someone suggest the rubber foot under the eject button. Tried to push it away from the eject button and tada it worked! No idea how it happend since I have not moved my PS4 or anything.
http://gamrconnect.vgchartz.com/thread.php?id=130023&page=1# Official Playstation Vita Thread! Come in and join!!!