I am working on a Government computer that has been loaded with a corporate image of windows xp Pro. after an update done by our admin team.... there was a blue screen stating that an attempt was made to execute non executable memory.... I rebooted the machine and loaded to safemode in every way possible.. I even loaded the CD- to recovery mode, but it told me no hard drive was present.... interesting cause it boots to a system.. (not a dummy system) Toughbook laptop. Any other fixes?? I need all the help I can get?