title: go: cannot find GOROOT directory: C:\Go; C:\Go\bin
body: <p>As title, I just install Go package in my laptop.
  OS:Windows 7 Enterpreise SP1 (64bit)
  Install path: <code>C:\go</code></p>
  
  <p>I've set "Environment Variables":</p>
  
  <pre><code>GOROOT 
  Value = C:\GO;C:GO\bin
  </code></pre>
  
  <p>I made hello.go file and save it in <code>C:\go</code></p>
  
  <p>When I run <code>"go run hello.go" in CMD in C:\</code>, get error message as below:</p>
  
  <pre><code>go:cannot find cannot find GOROOT directory: C:\Go; C:\Go\bin
  </code></pre>