A. To control the use of the Shutdown Event Tracker, perform the following steps:

  1. Start regedit.exe.
  2. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability.
  3. Double-click ShutdownReasonUI, and set it to 1 to enable or 0 to disable.
  4. Click OK.
  5. Close regedit.

You don't need to reboot for this change to take effect.