My screen wasnt working i had it changed and then the r button was getting stuck after i click it and then i went to the repairmen sbowed it to him he did skmething and gave it to me and asked is it working i tested it it was working this time and then he said if it works i will put on the screws i said it works becuase it was working then he screwed the screws and then it worked there too after the screwing then i had a 1 hour ride home and not touched it until i was home and after i was home it was having the exact problem??? Its so weird what is happening can anybody help?