Have a go at ASPI
ASPI,
Advanced SCSI Programming Interface, is the source of
enough problems with anything even remotely related to an optical drive. Note that Windows2000 and WindowsXP do
NOT come with ASPI installed and many users, just starting to do more than basic activities with their drives are encountering problems left and right. ASPI is one of the simplest things to check for -- it just takes one reboot. For more information regarding ASPI see
http://cd-rw.org/articles/archive/aspisetup.cfm .
IMPORTANT: when checking the version numbers,
all four the version numbers have to match identically otherwise the ASPI is not installed correctly/completely regardless of whatever the checker says (this is especially true for Nero's InfoTools which only checks for the presence of the files rather than matching version numbers).