The M400 is a pretty new laptop probebly like 2005. Ive read other forums and im pretty convinced that taking out the cmos battery wont work. Also the backdoor password "toshiba" didnt work. However i didnt try building a parallel port thing yet. Anyone have any success resettting the bios password on a newer toshiba bios? When i turn on the computer I just see a black screen asking for a password and i cant even boot or anything. How I lost the password isnt really important but ill entertain you guys if you really want =).