title: install SQL server setup has encoutered the error on Win 7 :
body: <p>I wanna install SQL Server 2012 Enterprise edition but I have an issue during the installation. </p>
  
  <p>I'm working on a Win 7 OS, i5, x64, sp1.</p>
  
  <p>I tried to install it on my laptop and it doesn't work. After installing rules this error comes up:</p>
  
  <blockquote>
    <p>SQL server setup has encoutered the following error: There was a
    failure to calculate the default value of setting INSTANCEID. Error
    code 0x85640001.</p>
  </blockquote>
  
  <p>Now, I don't know what I can do? =/</p>
  
  <p>Help me please.</p>