Windows 7 “The Computer Restarted unexpectedly or encountered an unexpected error” Foo

HP’s Windows recovery installation seems to be a little bit broken. Or at least for me it was. While restoring the Windows 7 on an HP Elitebook 8540w I ran into some issues when the drivers installed. The system just stalled and nothing was moving anymore. After a reboot I saw this nice error message:

The Computer Restarted unexpectedly or encountered an unexpected error

Well, not nice at all, but there is a way you can continue from here. Here are the steps:

  1. On that very same screen press SHIFT-F10 and a command prompt should appear.
  2. Enter “regedit” (without the quotes) into the command prompt and press enter.
  3. In the registry editor navigate to HKLM/SYSTEM/SETUP/STATUS/ChildCompletion
  4. Double click on the entry setup.exe and change the value from 1 to 3.
  5. Close the registry editor.
  6. Click OK in the error window, which will restart your machine.

After these steps you should be able to continue with your Windows setup. In my case I had some trouble getting all drivers to work, but that is a different story.