Intel Xeon 5500 series Blue Screen with Hyper-V (Win2K8 R2)
From the KB: A computer is running Windows Server 2008 R2 and has the Hyper-V role installed. This computer has one or more Intel CPUs code-named Nehalem installed. For example, the Nehalem CPU for a server is from Intel Xeon processor 5500 series and for a client is from Intel Core-i processor series. In this scenario, you receive the following Stop error message: 0x00000101 (parameter1, 0000000000000000, parameter3, 000000000000000c) CLOCK_WATCHDOG_TIMEOUT http://support.microsoft.com/kb/975530