quote:
Originally posted by gif83
I'm guessing that your sister's desktop has been installed with a windows OEM CD intended for use for her desktop alone... this will not work with the laptop as OEMs are geared towards the individual machines. Even if you do have the cdkey (which is normally found on a sticker on the machine) this will not work on a different computer. Sorry there's no real way around it without delving down illegal paths.
btw.. why is it so important to have the professional version?
Because Pro has things that Home doesn't, such as domain support.
You can try using
this, but if that doesn't work, you almost certainly have an OEM issue.