I have a 12 X CD-Writer that does not have the automatic buffer underrun protection. However whenever, I try to write CDS, like Audio CDS , I get the error "Buffer Underrun" and the burn process fails. This has been happening suddenly. Though my CD Writer was working fine before that. While writing , I made sure that Norton or any other processes were not running. I would like to know that is it the CDROM or what part of my PC is causing this problem. My computer is P4 1.5 GHZ,640 MB RAM, 40 GB HDD.