Related to optical drive

hi
I am useing a dell desktop pc and faceing a problem with my optical drive,that it is playing all orignal dvd’s properly (which came with my Pc) even re writeable dvd’s and cd’s and even the most scratched cd’s but it is not playing and even showing(detecting) any burned dvd’s or writeable dvd’s( it is not able to format writeable dvd’s) , Please help me to solve this problem

thanks