At the outset you could seek the help of the person who installed Windows 7. That said the other way out is to reinstall Windows 7 with your original genuine DVD yourself.
But before you do that, please check that the installed copy of Windows 7 is genuine. If you find that it is genuine then please make the downloading and installation of the updates automatic. Wait for a day or two and check if all the updates are installed. If yes then leave the settings as they are and take no further action except keep using the computer normally.
If not then please reinstall Windows as suggested in the opening para.