go into your bios , and at standard bios setup, Make sure your secondary ide ..either primary or slave , Is set to auto,,Save settings and exit. One question i have, and this setting might answer it , is does your bios see your cd-rom? and if you can get cd access from a startup disk,i guess i just answered my own question. doh~!. But sometimes it does no-good, to set it at cd,rom instead of auto. Also in device manager , is everything ok under your busmastering,hdd controllers? is anything flagged? Also have you tried slaving it on the primary ide , or master/slave on the sec ide, If windows doesn't see it anywhere, Try going into safe mode and deleting your Ide controller w/primary and sec ide. boot back into normal mode and have it redetect ... making sure no dos cd rom drivers are loading.