I have a NEC ND-5100A DVD+RW, which came with my Dell Inspiron 5150 notebook. It was working fine, but I have recently had trouble burning audio CDs. While no errors appear while I run Nero, only the first few tracks on the CDs work. I have no idea where to begin. Any suggestions?

Well, make sure that it isn't a problem with the CD being corrupt, dirty, or scratched in the first place. You could also try using another program, such as Windows Media Player or Music Match Jukebox. Both are free (trial version for Music Match). I know some people don't like other programs, but its worth a shot to get your CDs working.