If you lost some data in your Windows 10 computer, you can use MiniTool Power Data Recovery to easily recover lost data or mistakenly deleted files in 3 simple steps. If your Windows 10 computer has other problems, you can repair Windows 10 with 6 ways. Bottom Lineīy following the steps above, you can easily activate Windows 10 for free with CMD. If you want to check whether your Windows 10 computer is activated or not, you can press Windows + R keys on the keyboard to open Run box, type slmgr.vbs -xpr in Run box and hit Enter. Slmgr /ato How to Check If Your Windows 10 Is Activated or Not Find the Serial Number On the PCs Hardware, Box, or Elsewhere. You may also be able to find the serial number in the BIOS or UEFI firmware settings screen. Type the following command lines and remember to hit Enter after you type each line. On Windows 10 or 8, right-click the Start button and select Command Prompt. If you buy or find the activiation key for Windows 10 Pro, you can replace "Windows 10 license key" in the command line after slmgr /ipk. Copy and paste the following command line in Command Prompt window and hit Enter. Click Start and type cmd, right-click Command Prompt app and choose Run as administrator. Read More How to Activate Windows 10 Pro with CMD