Forcing a System Crash from the Keyboard

1. With USB keyboards, you must enable the keyboard-initiated crash in the registry. In the registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\kbdhid\Parameters, create a value named CrashOnCtrlScroll, and set it equal to a REG_DWORD value of 0x01.

2. 如果想做一個complete memory dump:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CrashControl\CrashDumpEnabled to 1

    

   值爲2是kernal memory dump.

3. You must restart the system for these settings to take effect.

4. After this is completed, the keyboard crash can be initiated by using the following hotkey sequence: Hold down the rightmost CTRL key, and press the SCROLL LOCK key twice.

http://msdn.microsoft.com/en-us/library/ff545499.aspx