Product cannot be used to upgrade your system, it requires a clean installation of OS.

In order to install the software on your PC, please follow the instructions https://www.microsoft.com/en-us/software-download/windows10.

In case of an issue with activating your Windows key, please use one of the methods:

Method 1:

1. Click on ”Start” icon , then open ”Settings”, choose ”Update & security”, and then select ”Activation”.

2. Choose the ”Activate by phone” option.

3. Click the drop-down menu, select your country, and then click ”Next”.  

4. Call the Toll free number and follow instructions to generate confirmation ID to activate your Windows.

Method 2:

1. Press and hold "Windows" key and press "R" on your keyboard.

2. Type "SLUI 04" in the window that pops up and press enter.

3. Click the drop-down menu, select your country and then click Next.

4. Call the Toll free number and follow instructions to generate confirmation ID to activate your Windows.

More information regarding phone activation can be found https://support.microsoft.com/en-us/kb/950929.

This key can be used by one computer unlimited times.

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