Windows 10 Pro Retail Upgrade Installation instructions

Posted by Kastoff Store on

Thank you for your purchase of Windows 10 Pro 32 or 64 bit Retail Product Key. 


If you are upgrading from Windows 7 or 8 you will need to create a Boot media for the upgrade. Download, run the setup and follow the instructions in the creation tool: 


Microsoft Media Creation Tool download:


Your Windows 10 Pro Retail Product key can be used for upgrade from home to pro or a new install.


Upgrade using a Windows 10 Pro product key

Select the Start button, then select Settings > Update & Security > Activation . Select Change product key, and then enter the 25-character Windows 10 Pro product key. Select Next to start the upgrade to Windows 10 Pro.


General resource on how to boot from bios and for fresh install of windows:

How to boot from Bios:

Instructions how to do a clean install:

Step by Step guide about downloading and installing Windows 10

Please let us know if the key works! If there is an issue we would like to take corrective action immediately. To expedite replacement or refund, please provide a screenshot of the error or allow our specialist to verify your issue with TeamViewer ( by providing the ID and Password so we can resolve the issue within 30 days of dispatched digital goods. If we cannot remedy the issue we will refund no questions asked after our specialist have documented and verified the issue(s). We require these cases to be documented to deter fraudulent claims.

-- Information regarding TeamViewer Security:

Please let us know when is a good time for assistance so we can coordinate a time convenient for you and our specialist. We guarantee if we cannot setup and activate for you, we will refund or replace the product key with no questions asked.

Return Policy:

***When you get a chance, please provide us a review for a product you purchased and we will provide you a $1 off discount code for eligible categories: software/single player/ offline account program of your choice.

Click "Write a review", on the right where Customer Reviews start linked below:

It's simple, just navigate to the program/software you purchased and at the bottom of the program description click write a review. Once we verify your review we will submit the code for you to use! Please share us with your family and friends!

Let us know if you have any other questions and thank you for your continued support!