You can click " I don't have a product key " (I do n't have a product code) if I want to enter the following code. You need to select the Windows version before proceeding.
8. Check the " I accept " dialog box (I agree), then click Next . This is the approval of the Microsoft terms of use and the next page.
9. Click Custom located in the middle of the page.
10. Select the Ubuntu drive. Click on the hard drive to install Ubuntu Linux.
11. Delete the Ubuntu drive. Click on Delete , then select OK when requested. This is an operation to remove Ubuntu from the drive and reformat the drive to NTFS, the file system used on Windows.
12. Click Next . This is a message telling you that you want to install Windows on the selected drive.
13. Follow the instructions on the screen. After completing Windows installation, you will be asked to set some options (such as language, date, time, access rights, .). Currently Ubuntu has been removed from the computer.
Refer to some other articles:
Having fun!