How to become an administrator for SQL Server

Here is the situation:

1. 
   

   I Installed VS2013

   
   


2. 
   

   That comes with SQL Server Express

   
   


3. 
   

   I am not able to create a DB from VS2013

   
   


4. 
   

   thinking that it's because of user privilege issues, I Installed SQL Server Management Studio

   
   


5. 
   

   I have looked to figure out how to give myself Administrator privileges on SQL Server, and nothing has worked so far

   
   


6. 
   

   I am the administrator of my Windows7

   
   


7. 
   

   I run the SQL Server Management Studio as Administrator

   
   

Still I get error messages about not having permission to perform this action: Error 15247

Any ideas what I need to do to have permission

Link to image.