HP X4270 5 YEARS

Question

HP X4270 5 YEARS OLD. CONTROL PANEL READS HAXMNTE KHONKY B --NOT FAX,COPY,SCAN CONTROL PANEL DOES NOT RESPONSE TO BUTTONS. i UNINSTALLED AND THE SAME PROBLEM OCCURS WHEN I REINSTALLED WITH THE CD. NEW HARD DRIVE TO MY COMPUTER. DO I NEED ANOTHER DRIVER? THE REPAIR SHOP TO MY TOWER TELLS ME I JUST NEED A NEW PRINTER FAX COPY SCAN. ????THE FAX COMES UP WITH SINGAPORE, I CANNOT GET THE BUTTONS TO REGISTER OPTIONS CLEAR SELECT NO RESPONSE.