MR 816 csx has crapped itself/ help

was working fine , now in cubase ai4 it is no longer an option , cannot use yamaha steinberg driver, cant do anything to it, in the tray i click to open control panel, nope cant open,try to open mr editor in the tray also , nope cant open, and in cubase ai4 which its been ok, it doesnt come up as a option in devices, so its dispeared and nothing works on it, can someone help me?? or it it time to bash this peace of junk with a hammer…