Problem
Operating system deployment fails with the following error:
"The Computer Restarted unexpectedly or encountered an unexpected error. Windows Installation cannot proceed. To install Windows, click "OK" to restart the computer, and then restart the installation."
![](/kb_upload/image/SCCM-2012(2).PNG)
Resolution
On the screen with the error message above try the following steps:
- Hold down "Shift + F10" to open the command prompt
- On the command prompt type "regedit" with no quotes to open the Registry Editor
- Go to:- HKLocal machine -> System ->Setup ->Status -> ChildCompletion
- Highlight ChildCompletion and on the right you will see "setup.exe"
- Double click "setup.exe" and verify the value is set to "1"
- Change the value to "3"
- Close the registry editor and close the command prompt.
- Click OK on the error message and now the installation process should complete.
Applies to:
- Deployments of Windows 7 using SCCM 2012.