arthur payne

My TV is about 5 years old (Software version 04/63.25) and for the first couple of years it was connected via a Fetch Set-top box. After disconnection the Fetch box was returned to the supplier and the TV connected in the normal manner. Ever since, whenever I activate the pointer, which is not very often now, there is a message on the screen "You can control your Set-top box with Magic Remote. Would you like to continue?" I have tried every possible way, short of a complete factory reset, to obviate this but without success. Can anyone suggest a fix? Any help/suggestions greatly appreciated.