Win7 system to see if you can upgrade the win10 system license for free.

Although the computer butler and 360 security guards can freely schedule the installation of win10 system, but in fact need to have authorized conditions to upgrade the genuine win10 system for free, first of all to determine the computer system Authorization method can also be free for long-term. How to check if the current system supports free upgrade win10 authorization? The following small series will share with you the authorization to view whether the Win7 system runs the free upgrade win10 system. 1. Click “Start ——Run”, enter “slmgr.vbs /dlv” and press Enter. 2. In the pop-up window, observe the second line, the marked position shows the The system's authorization method Retail-Retail Key, OEM-Retail Key, VOLUME-Volume Authorization Key
5, or right click "My Computer" to view the last line
Through the above method, you can see Is there any authorization for the system to be used? If you want to upgrade the win10 system, please find out if your system has authorization method.