title: Fail to vagrant up laravel homestead
body: <p><a href="https://i.stack.imgur.com/SrnTJ.png" rel="nofollow noreferrer">enter image description here</a>
  By following the instruction at <a href="https://laravel.com/docs/4.2/homestead,I" rel="nofollow noreferrer">https://laravel.com/docs/4.2/homestead,I</a> had installed laravel homestead using vagrant 1.8.0 and Virtual box 5.1.10 on WIN7 yesterday. 
  However the computer was power off accidently. When I restart the computer, I got these errors:</p>
  
  <pre><code>Administrator@L3L44LWAP6XZHHR MINGW64 ~/Homestead (master)
  
  $ vagrant up
  Bringing machine 'homestead-7' up with 'virtualbox' provider...
  ==&gt; homestead-7: Checking if box 'laravel/homestead' is up to date...
  ==&gt; homestead-7: Clearing any previously set forwarded ports...
  ==&gt; homestead-7: Clearing any previously set network interfaces...
  ==&gt; homestead-7: Preparing network interfaces based on configuration...
     homestead-7: Adapter 1: nat
     homestead-7: Adapter 2: hostonly
  ==&gt; homestead-7: Forwarding ports...
     homestead-7: 80 (guest) =&gt; 8000 (host) (adapter 1)
     homestead-7: 443 (guest) =&gt; 44300 (host) (adapter 1)
     homestead-7: 3306 (guest) =&gt; 33060 (host) (adapter 1)
     homestead-7: 5432 (guest) =&gt; 54320 (host) (adapter 1)
     homestead-7: 22 (guest) =&gt; 2222 (host) (adapter 1)
  ==&gt; homestead-7: Running 'pre-boot' VM customizations...
  ==&gt; homestead-7: Booting VM...
  There was an error while executing `VBoxManage`, a CLI used by Vagrant
  for controlling VirtualBox. The command and stderr is shown below.
  Command: ["startvm", "75bdb497-9044-4c49-ab2d-5244eb234d6e", "--type", "headless                                                              "]
  Stderr: VBoxManage.exe: error: The virtual machine 'homestead-7' has terminated
  unexpectedly during startup with exit code 1 (0x1).  More details may be available
  in 'C:\Users\Administrator\VirtualBox VMs\homestead-7\Logs\VBoxHardening.log'
  
  VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine.
  </code></pre>
  
  <p>I tried to reinstall the virtual box and the vagrant, but it doesn't work to me.</p>
  
  <p>Any help is much appreciated.</p>