Any applications that came with your PC will be reinstalled, but all other applications will be removed. Warning:-All of your personal files will be deleted and your settings will be reset. Removing Everything and Reinstalling Windows
To read more about Backup and Restore System In Windows 8 view How To Backup and Restore System In Windows 8
How to Restore Windows 8 Using System Restore System Restore doesn’t change your personal files, but it might remove recently installed applications and drivers.
If you think that an application or driver that you have recently installed has caused problems with your PC, you can restore it back to an earlier point in time – known as a restore point. Restoring Windows 8 to an Earlier Point in Time If you used Backup and Restore in a previous version of Windows, you can use Windows 7 File Recovery to restore those backups.
If you need to restore your personal files, see How to use File History. Resetting your PC reinstalls Windows but deletes your files, settings and applications – excluding the applications that came with your PC. Refreshing your PC reinstalls Windows and keeps your personal files, settings, the applications that came with your PC and applications that you have installed from Windows Store. Restoring your PC is a way to undo recent system changes you’ve made. If you’re having problems with your PC, you can try to restore, refresh or reset it.