Hi again silva
You will fit in well here then .... most of us have been around the block more than once !! :)
Sometimes the ones at the back ( or front ) develop problems and if you try the opposite side it often solves the problem.
They are independent of each other.
Please do come back and let us know how you get on ...... we are always here to help.
If you post back - let us know the make and model number of your computer please
and which Operating System you are using.