Can anybody solve my laptop's problem?

I have windows 7 installed on my Laptop.Yesterday when i sat on internet & it started installing updates automatically (as usual).
but today some time before when i started my laptop it was not showing me the desktop icons,desktop theme & also the start bar.
It opens “My computers” directly.
Does anyone know why is this coming?
I have just done system repair but nothing was repaired.
I can’t see the desktop screen,theme,Start bar.

How can i regain all these contents which i am not seeing currently? Please give me some solutions? :(