Hello Rhino275 and welcome to Seven Forums!
It sounds like your friend has given you a copy that has been modified heavily. Since you dont say/know where this copy came from, you really dont know what else was removed, or what may have been added.
Your best bet, IMHO, is to download the 90 day evaluation of Windows 7 Enterprise Edition -=> here
, format your drive and do a clean install ... I aint sayin ... Im just sayin....