Rotation screen problem

Hello everyone
I have a problem with my torch, when I do it snaps to rotate in landscape mode does not work (excepted sometimes it is in landscape mode for a few minutes and after the same thing)also the keyboard does not work when landscape mode does not work.
I tried to do a wipe with BBSAK and reinstalled two different version os 6 but anything done, and I know it's not because of accelerometer because when I watch a video and I rotated left or right the image also rotates :/
Thank you very much to all those who take the time to answer me :)