File History regularly backs up versions of your files in the Documents, Music, Pictures, Videos, and Desktop folders on your PC. Over time, you'll have a complete history of your files. If the originals are lost, damaged, or deleted, you can restore them. You can also browse and restore different versions of your files. For example, if you want to restore an older version of a file (even if it wasn't deleted or lost), you can browse through a timeline, select the version you want, and restore it.
File History doesn't back up files you have on SkyDrive, even if you have synched copies stored on your PC in folders that File History backs up.
If you haven’t yet set up a File History drive and turned File History on, see Set up a drive for File History. For info about troubleshooting problems, excluding folders, and changing drives and settings, see What if something goes wrong in File History?
Swipe in from the right edge of the screen, tap Search (or if you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and then click Search), enter restore your files in the search box, and then tap or click Restore your files with File History.
Enter the name of file you're looking for in the search box, or use the left and right arrows to browse through different versions of your folders and files.
Select what you want to restore to its original location, and then tap or click the Restore button.
If you want to restore your files to a different location than the original, press and hold or right-click the Restore button, tap or click Restore To, and then choose a new location.