so the drive wont read discs that you put in it?
is the drive listed in the windows device manager?
does it read any disc (cd, cdr, cdrw, dvd-rom, dvd+/-r/rw)?
in windows vs not in windows?
it could be windows failure or it could be the hardware failure
try deleting it from the windows hardware device manager
it will re-detect it
if it still doesnt read it or doesnt re-detect the hardware
see if you have a bootable cd (e.g. windows cd)
try to boot from it