Lenovo laptop 3000G430
DVD drive not working

I bought lenovo laptop 3000G 430 M/H 4153 33Q S/N. MACO4WO on 05/12/08 from Aligarh (U.P) and now I am residing in Bareilly, I had also renewed warranty for laptop's safety and now its dvd drive is not working properly it is not reading any cd or dvd please do something for its repair or chage its part as soon as u could...