So I have had this Magnavox TV/DVD combo for a few months now and its worked fine. Until I tried putting a disc into it and it would go half way in then eject and make a bad 'sputtering' noise. My sister had been watching dvds in it and maybe she forgot to take the disc out and its still in. So I pressed eject and all it did was make that noise again. Even if there is a disc in there it won't read it. What should I do?