Will Installing Windows 10 from USB Delete Everything?

I decided to go back to Windows 7 after upgrading from Windows 7 to 10. But I've had a lot of problems. Therefore, I plan to reinstall Windows 10. The Windows 10 OS is already on the USB. But will installing Windows 10 from USB delete everything? Thanks in advance!

Installing Windows 10 will erase all data on the C drive and will reinstall the files and folders of Windows 10. Therefore, you should back up your data before installing Windows 10 from a USB drive.

Generally speaking, installing Windows 10 from a USB drive without data loss includes 2 parts: backing up data and installing Windows from the USB drive.

To back up your data or computer, using professional backup software, like EaseUS Todo Backup, is your best choice.

EaseUS Todo Backup is a dedicated backup and recovery tool which can help you back up almost everything on your computer. It can help you create a WinPE bootable disk and create different types of backups, such as full, incremental, and differential backups.

In addition, it can help you install Windows 10 from one PC to another easily and quickly and restore files from a backup. If you want to create a backup on your computer, EaseUS Todo Backup can suit your every need.

After backing up your data, you can try to install Windows 10 from a USB flash drive step by step.

Installing Windows 10 from a USB drive will delete everything on your C drive. But if you back up your data via EaseUS Todo Backup, everything will remain intact, as you can restore the backups whenever you need.