Hi, I recently was given an IBM Thinkcentre M50 - OS Windows XP Professional - Intel Celeron 3.06GHz. (I was told the previous owner was a school district). anywhoo.. After windows starts up, I have to click the ctrl, alt, delete to get windows started - then I'm prompted for a username and password. I've been trying to change the OS to Windows 7 ultimate, which I have on disc so that I can get around this password crap, but I don't know what's wrong - I've gone into setup utility and changed the startup sequence - the option I have in there is USB CDROM - I don't know if that's the same thing as booting from a cd, but it doesn't work and doesn't read the cd and it restarts and sends me back to the password page. I know I'm sort of a noob at this, but some help would be nice! Thanks!