I have one hard drive, it is partitioned in two . one side for the normal Macintosh HD. and the other for my windows. partition created by boot camp, it is a fat32 partition of 32GB. concerning the BSOD, i do not see ANYTHING. once i select the windows partition with the "option" key , the screen goes black for 3 seconds. then a " _ " (without the " ) blinks 5 times. then a black screens appears again for 3 seconds,then the underscore blinks 5 times again, and then i get a final black screen where nothing happens. the computer's fan start blowing like mad, and won't stop unless i manually turn off the computer. the keyboard doesn't answers when i have the black screen, or at least the "caps lock" and "num lock" lights of my keyboard won't turn on/off. So i suppose the keyboard has frozen. I remind you that I can turn on windows via parallels , so i was able to do all diagnostics on windows. i have tried most solutions that i have seen on this forum, with no help. i have uninstalled parallels, no help. would someone have a link to a Bootcamp help site ? i can't seem to fin any Apple website for it ... i might as well explain my problem to them , you never know. but i have checked the Apple database and faqs, but haven't found my error. thanks for the effort Alicia, best regards, Ansel EDIT: pls see following post to see update on my BSOD.