I moved a 250 Gig HD from one computer to another machine that had a bad 500 Gig HD to remove. When I installed the 250 GB HD in place of the 500 GB HD, I had to reinstall Windows. The machine had used a different version of Windows Vista than the one that came with the 250 GB HD.
During the reinstall all of the Windows components and files that existed on the 250 GB HD were put into a file called Windows.old. When I try to use say a DOC file inside of the is folder, I get a message that says there isn’t a program on the system that can open and execute it.
How do I get the old Windows install to work with the new Windows install.