No option to go back?

I had an old PC lying around. I installed Windows 10 S in it. Then I tested it and didn't liked it, So I decided to Go back to previous build. There are Windows.old folders but no option to go back. Can anyone suggest me what to do?

Solution 1:

Can anyone suggest me what to do?

You will have to reinstall whatever version of Windows you were using. It will not be possible to revert back to your previous installation. You were warned you were installing Windows over itself. You will want to manually backup the files contained within Windows.old before you reinstall the version of Windows you actually want to use.

I had an old PC lying around. I installed Windows 10 S in it. Then I tested it and didn't liked it, So I decided to Go back to previous build.

You cannot upgrade an existing installation of Windows to Windows 10 S Mode. You actually performed a clean install, which mean, you cannot revert to your previous installation.