My android Phone (Sprd A500) with ICS, now shows only a black screen after i tried some app like Swapper 2. After the install when i rebooted, i went hang so i tried to factory reset it, everything went fine, but when restarted like usual the lock screen came and i unlocked by swiping, but there is only black screen, the screen shows my SIM signal, profile mode, and battery. i can attend calls and can receive msgs. but cant access any settings or can't go to menu. PLEASE HELP....