CD KEY NOT INCLUDED. 

NO CD KEY NECESSARY!

YOU WILL NEED USE PRIOR INSTALLED KEYS OR PURCHASE A BRAND NEW CD KEY SEPARATELY TO UNLOCK FULL FEATURES.

Windows 10 64 & 32 bit Pro 16GB USB Flash Driver Installer - USPS USA Ship

PLEASE BACKUP YOUR FILES BEFORE ATTEMPTING TO INSTALL WINDOWS 10 PRO.

Install, reinstall, repair, boot to install on new or old hard drive. Does not include key/license. To retrieve key/license open cmd using your search bar. Type or copy and paste or type in the following command    "wmic path softwarelicensingservice get OA3xOriginalProductKey" without the quotation marks and hit Enter. you should see your original key/license to reactivate Windows . 
Use on multiple 64 bit compatible computers--No internet needed to install. For best results, please connect wi-fi for windows to find most latest drivers.       


HOW TO CHANGE CD KEY AFTER INSTALLATION:
Select the Start button, and then select Settings > Update & Security > Activation > Change product key.

Type in the prior product key you've wrote down. If it doesn't work then it is because it has a limit usage on that key. You will have to purchase a new CD key via secondary purchase.

Enter the new CD key and follow the instructions.