OK So i recently was given a few computers from an office and they all have xp professional login passwords. I just want to put a fresh install of windows ultimate on them. I have done this many times but never with this many errors. When changing the boot order and everything is done in prep i get a no boot device available error. Apparently you cant boot from usb either. I assumed it was a security function so removed the hard drive and tried just booting to live cd and get the same error. On most of the computers there is no OS install mode but one has it in bios and assume this computer has the best chance. I have read a few other threads but am gonna open this one up for some new insight.