A Guided Walkthrough is now available that helps identify and troubleshoot issues relating to PXE boot in System Center 2012 Configuration Manager (ConfigMgr 2012 or ConfigMgr 2012 R2). If you are experiencing issues related to PXE boot then the troubleshooting suggestions here are a great place to start:
3012951 - Guided Walkthrough for Troubleshooting PXE boot issues in System Center 2012 Configuration Manager (http://support.microsoft.com/kb/3012951)
J.C. Hornbeck| Solution Asset PM | Microsoft GBS Management and Security Division
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