Refresh your PC - Windows 8

Enjoy a fresh PC without losing everything.
If your system is feeling a little sluggish, it may be time for a refresh. In the past we would have to find our copy of Windows 7, back up all of our data, and perform a fresh install to enjoy that back-to-factory-fresh feeling. But now Windows 8 allows you to perform a fresh install from within Windows without losing any data.
In order to perform the refresh, go to Settings and click the Change PC Settings tab near the bottom. Select the General tab and find the "Refresh your PC without affecting your files" section near the middle (you may also select "Remove everything and reinstall Windows" to get the true factory settings treatment). Select "Get started" and press "Refresh." After a few minutes the PC will restart, and you will have a fresh copy of Windows 8.