7 ERROR CODE ON MY PEUGEOT 106 CAR STEREO?

I have a peugeot 106 independence . The blooming radio is driving me MAD !!! I made up some codes at first and kept on getting errors. I have now managed to get the code for the stereo and typically the 7 ERROR is still showing after 2 weeks after putting in a wrong code. Do you think that the stero is faulty or do i have to wait until it dissapears.!!! I just want some music in my ears!!! Not STRESS!!! ANY HELP WOULD BE APPRECIATED. Thanks