Please just a quick help on my server path

Question

Hi!

 

I do reinstall my win 7 because my computer have been infected with a stronger virus. Then I reinstall my VS2010.

I have on my Server Explorer this:

-data connection

    -Servers

       -INAC-PC 

 

Then would like to create a new Slq Data Server. But when I wrote this on my "Create New Sql Server Database" windows : localhost\inac-pc\sqlexpress

Its doesnt recognize it. Please could you tell me what can I try to have my real path back. 

 

Thank yu in advance.