Invalid Windows XP program.

[Nevada Larry]

My computer was recently upgraded and I have since then found that it has an
invalid copy of Windows XP installed. I owns a current copy of Windows XP.
Can I reinstall my copy without having to reinstall all of the other
software on my computer?

 

[Mike Hall \(MS-MVP\)]

Nevada

If you had Home, and now have Pro, prepare to do a backup of all important
files because it is re-format and re-install time.. for more on installing
Windows, go to..

http://www.michaelstevenstech.com