If it is Windows 10, you can do so here https://www.microsoft.com/en-us/software-download/windows10 https://www.microsoft.com/en-us/software-download/windows10

If it is Windows 10, you can do so here https://www.microsoft.com/en-us/software-download/windows10 https://www.microsoft.com/en-us/software-download/windows10 Otherwise https://www.microsoft.com/en-us/software-download/windows8ISO https://www.microsoft.com/en-us/software-download/windows8IS... https://www.microsoft.com/en-us/software-download/windows7 https://www.microsoft.com/en-us/software-download/windows7