dvd getting stuck then won't play?

My dvd player plays part of the dvd then it freezes and when I re-insert the dvd it beeps, clicks once or twice, at intervals, and sometimes it makes a buzzing sound. Then after loading the dvd it signals "No Disc".
I have a Mikomi DVD player from Argos purchased in December 2007 and installed several months later when I realised that my TV did have a connection for DVD players.