title: How to clean up bad Azure PowerShell uninstall?
body: <p>Background:
  I had installed Azure-PowerShell 1.x via the MSI, and subsequently added some Azure Resource Management modules via the command prompt. 
  Everything was working fine; then yesterday afternoon the ISE inexplicably disappeared. In an attempt to remedy that, I planned to uninstall the MSI &amp; then reinstall. (I did not know that it is necessary to first unstall the manually-added modules.)
  The uninstall appeared to run fine, but it didn't remove the manually-installed modules nor did it warn me about them.</p>
  
  <p>Result: The machine no longer has Azure-PowerShell installed. I cannot Install, Uninstall or Repair the installation because some modules remain:</p>
  
  <blockquote>
    <p>Azure Modules from the PowerShell Gallery are installed on this
    machine. Please remove these modules before installing this MSI.</p>
  </blockquote>
  
  <p>Is there a way to "fix" this installation? Either manually remove files/cleanup registry, or force the MSI to install over whatever is there?</p>
  
  <p>This is all running on a VM on Azure. I could delete the entire VM &amp; start from scratch if necessary, but would prefer to avoid that if there's a relatively simple fix.</p>
  
  <p>Thanks!</p>