title: Vagrant 'remote connection disconnect' while booting
body: <p>Whenever I try to boot a Vagrant box on my Windows 7 x64 laptop in <code>git bash</code> using <code>vagrant up</code>, I get a long series of <code>Warning: Remote connection disconnect. Retrying...</code> messages. Occasionally this results in failure with a couple of different messages (either guest VM tools not being installed, or a timeout), but sometimes, after 10 or 15 messages, it will boot successfully and I can SSH into it.</p>
  
  <p>A picture, to illustrate:</p>
  
  <p><img src="https://i.stack.imgur.com/qG2ck.png" alt="Vagrant up in git bash"></p>
  
  <p>And the full output of the <code>vagrant up</code> command:</p>
  
  <pre><code>$ vagrant up
  Bringing machine 'default' up with 'virtualbox' provider...
  ==&gt; default: Checking if box 'ianwalter/ubuntu-node-nginx' is up to date...
  ==&gt; default: Clearing any previously set forwarded ports...
  ==&gt; default: Clearing any previously set network interfaces...
  ==&gt; default: Preparing network interfaces based on configuration...
      default: Adapter 1: nat
  ==&gt; default: Forwarding ports...
      default: 9966 =&gt; 9966 (adapter 1)
      default: 22 =&gt; 2222 (adapter 1)
  ==&gt; default: Booting VM...
  ==&gt; default: Waiting for machine to boot. This may take a few minutes...
      default: SSH address: 127.0.0.1:2222
      default: SSH username: vagrant
      default: SSH auth method: private key
      default: Warning: Connection timeout. Retrying...
      default: Warning: Remote connection disconnect. Retrying...
      default: Warning: Remote connection disconnect. Retrying...
      default: Warning: Remote connection disconnect. Retrying...
      default: Warning: Remote connection disconnect. Retrying...
  </code></pre>
  
  <p>And so on. Is this usual behavior? Is there some way I can fix it? I'm running Vagrant 1.6.2 with VirtualBox 4.3.12.</p>
  
  <p>EDIT: After BrianC's advice, I booted a GUI session to see what the VM was doing while the connection was refused. This is what it looks like:</p>
  
  <p><img src="https://i.stack.imgur.com/h9F2o.png" alt="Git bash and VM gui"></p>