System Restore - This rolls back the system files to a previous system restore point (least obtrusive).These options are shown below in order from least obtrusive. There are several ways to reach your goal of having a properly operating computer, some that will allow you to keep your files and personal settings.
There may come a time when you would either need or simply want to Reset or Refresh the software image on your computer because of issues you may be experiencing. See the information on System Restore in the following Article for help with Windows 7 or Windows 10. If you'd like to skip this guide and contact a professional, CLICK HERE.