thank you crossg.
i always have S/B default un-activated for known media.
here's my description posted in another thread.i just copy/paste here. forgive me, i'm a slacker
i burned 3 MCC004's which indicate as 16* and came out with scores below 70(0 for one)...after i set DMA to Mode 2 ...upgrated fw to BSLB...replaced 40pin IDE to 80pin(couldnt help with qscan, so i changed back)...and up-to-dated nero OEM version...
usually, i leave all settings default( WOPC on, S/B off for known media, etc.)
i have only 256M DDR400(PC3200) to run winXP SP2. AMD sermpron 64 3200+...
plus, i have a qualified USB to IDE cable with power cable. in case that i need to do test
REALLY NEED YOUR KIND HELP. THANKS IN ADVANCE