You have a Windows Server 2008 R2 system with the Hyper-V role enabled. If the BIOS has been set to inject SMIs at a high rate, 11 SMI/sec for example. The system may hang during boot time.
Failure can also occur at lower frequencies (system hanging/slower boot time), but as the rate of SMI injections increases, the likelihood of failure (system hanging) increases.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2722461 - Last Review: 25 Jun 2012 - Revision: 1