I have two NT4.sp6 PCs with CD drives that only work once right after reinstalling the SCSI/IDE Bus Master drivers. AS soon as I open the CD they quit recognizing it. On one I installed motherboard drivers also and it has driver conflicts but, the drive reads the CD, and works normally except that it does not list the CD name in NT Explorer and it kicks up the CD not working Retry/Cancel screen multiple times. Ideas on how to reinstall the IDE/ATAPI Bus Drivers and get them to work permenantly would be appreciated.