How I will restor system to default settings

Hello Brainy,
Experts I need your help to restore my system to default settings. When I try to restore the Windows 7 in the computer in the middle of the process I encountered an error message. This error message stopped my repair attempt to restore the windows. Every application in the system is the licensed one from the authorized website. Please help me to restore it. Thanks.

Microsoft Office can’t find your license for this application. A repair attempt was unsuccessful or was cancelled. Microsoft Office will now exit.
