PaulAnthony2233
New Member
Hi there guys, i bought a pc came pre-installed with XP Home OEM version, i want to switch to XP Pro, so i borrowed an XP Pro CD on my friend, but not the product key (of course!!!) so, i try to install XP Pro on my Comp XP Home OEM version, and i enter the product which is use to install the OEM Version,and i got an error message!!! "The product key you use is invalid!!!" what will i do, i want to switch to XP Pro without buying a new copy of XP!!! is it posseble to enter an OEM Version product on an retail XP?