While you can technically buy a hard drive or SSD with Windows already loaded, doing so is generally discouraged by experts due to significant technical, legal, and security hurdles. Where Can You Buy Them?
Even if you purchase a drive with Windows on it, it is not a "plug-and-play" solution for several reasons: buy a hard drive with windows installed
The Reality of Buying a Hard Drive with Windows Pre-installed While you can technically buy a hard drive