China mobile totally dead with battery

hello my touch screen of china mobile model Desay L608 was damaged and the mobile began to restart while switching it on and it also shown a response like display off but keypad led glows i removed that display and replaced it with a new display and switch it on the mobile gets on but nothing is on the screen expect a white light the display gets off immediately but the keypad led glows until the battery is removed but now the set is totally dead with battery i dont know what to do plzzzzzzzzzzzzzzzz help me to solve this problem