PC PowerDown after Shutdown in NT

by Wayne Maples [Published on 20 April 2004 / Last Updated on 20 April 2004]

Win98 has a niffty feature where the PC powers down after a shutdown. This new capacity requires an ATX power supply. You can get similar functionality in Windows NT by applying the following Windows NT registry hack:

Key: Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: PowerdownAfterShutdown
Type: REG_SZ
Value: 1 Enable power off after shutdown

After this, the shutdown dialog should be Shutdown and Power Off.

If you make the registry change and the PC reboots instead of powering down, you can often get it to work by upgrading your hal.dll with the Softex dll which shipped with SP4.

  • cd %systemroot%\system32
  • ren hal.dll hal.dll.original
  • copy cd_drive\i386\hal.dll.softex hal.dll

If this does not work, and your PC just reboots, check with the vendor of your PC and see if they have a powerdown BIOS and hal.dll. It may be, that you do not have an ATX power supply. Newer PCs do, but ...

Related Tips:

Shutdown at specific time each day
Reboot NT nightly - shutdown.exe
Enable quick NT shutdown
Remotely Shutdown Windows NT Workstation or Windows NT Server

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