SCCM Deployment: The computer restarted unexpectedly or encountered an unexpected error

Article ID: 512
Last updated: 25 Aug, 2017
Revision: 5
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Posted: 06 Nov, 2015
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Updated: 25 Aug, 2017
by Andrew Sharrad

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.

Resolution

On the screen with the error message above try the following steps:

  1. Hold down "Shift + F10" to open the command prompt
  2. On the command prompt type "regedit" with no quotes to open the Registry Editor
  3. Go to:HKLocal machine -> System ->Setup ->Status -> ChildCompletion
  4. Highlight ChildCompletion and on the right you will see "setup.exe"
  5. Double click "setup.exe" and verify the value is set to "1"
  6. Change the value to "3"
  7. Close the registry editor and close the command prompt.
  8. Click OK on the error message and now the installation process should complete.

Applies to:

  • Deployments of Windows 7 using SCCM 2012.
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