You can AS LONG AS the PC you use it on has a license for the exact same version of Windows as the disc.
Hello All, I have three Dell computers purchased within the last year.  Last month I put a solid-state hard drive in one of them to run the Windows 7 and several programs.  To do that I ran a clean install from a disk Dell graciously sent me.  Now I'm thinking of putting an SSD in one of the other computers (also an i5 chip) and wanted to know if I can use the same installation disk but the key code from the #2 computer.  As I understand it, the disk is keyed to Dell proprietary codes on the motherboard.  Both computers have Foxxconn B75 mobos but that's as far as I can take the comparison. Thanks for looking!  sh
Using Reinstallation DVD on different computer