My nokia e75 has been working perfectly well up until now, today when i opened the keyboard and tried to send a text message, some of the keys worked fine, but others either did not respond at all or gave a random string of letters, for instance when i hit 'A' it displayed ald on the screen, and the normal keypad on the phone is not working, neither is the camera, tried factory reset and that did not work either, do i need to get a new phone or is there still a possibility of a fix?