In addition, you want to ensure that the “Windows 7 Service Pack 1” is installed on the computer. However, before proceeding, you must confirm the hardware is compatible, purchase a Windows 10 (if applicable) license, and create a backup to roll back in case something goes wrong. You can quickly perform this task with the Microsoft Media Creation Tool, available for Windows 7 and 8.1. UPDATED : Using the in-place upgrade option, you can upgrade Windows 7 to Windows 10 without losing your files and erasing everything on the hard drive. You should also create a full backup before proceeding as part of the process.Finally, select the “Keep personal files and apps” option and click the Install button.Then choose “Upgrade this PC now” to upgrade to Windows 10 from 7.