PowerdownAfterShutdown

[Rowan Crane]

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Winlogon\]
"PowerdownAfterShutdown"="1"

I've needed to set this key as we had about 100 machines
to build, some would auto power off on shutdown command,
others would not, also the length of time switched on
seemed to have a bearing. (ones that would not power down
automatically straight after boot, would power down after
being left sitting for a half hour or so. The windows
build is identical, as should be the base units, although
i recognise that a circuit board / part revision may be
causing this - as we were unable to track it down through
normal power management detective work.

Seeing as this setting solves the problem, i've been
looking for more information on what it actually does - it
seems to force the machine into a brute force power down -
how does it do this? and more importantly, what does it
over-ride in order to achieve it?

Thanks anyone that can help

Rowan

 

[Mark V]

Rowan Crane wrote in

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Winlogon\]
"PowerdownAfterShutdown"="1"

I've needed to set this key as we had about 100 machines
to build, some would auto power off on shutdown command,
others would not, also the length of time switched on
seemed to have a bearing. (ones that would not power down
automatically straight after boot, would power down after
being left sitting for a half hour or so. The windows
build is identical, as should be the base units, although
i recognise that a circuit board / part revision may be
causing this - as we were unable to track it down through
normal power management detective work.

Seeing as this setting solves the problem, i've been
looking for more information on what it actually does - it
seems to force the machine into a brute force power down -
how does it do this? and more importantly, what does it
over-ride in order to achieve it?

All it does is notify the hardware (BIOS) to power down. But, it
only works with certain HALs and those might be the difference
between the machines. Also check for any related BIOS power/shutdown
settings.

A bit more at www.jsiinc.com for "PowerdownAfterShutdown"

 

[Mark V]

Rowan Crane wrote in

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Winlogon\]
"PowerdownAfterShutdown"="1"

I've needed to set this key as we had about 100 machines
to build, some would auto power off on shutdown command,
others would not, also the length of time switched on
seemed to have a bearing. (ones that would not power down
automatically straight after boot, would power down after
being left sitting for a half hour or so. The windows
build is identical, as should be the base units, although
i recognise that a circuit board / part revision may be
causing this - as we were unable to track it down through
normal power management detective work.

Seeing as this setting solves the problem, i've been
looking for more information on what it actually does - it
seems to force the machine into a brute force power down -
how does it do this? and more importantly, what does it
over-ride in order to achieve it?

All it does is notify the hardware (BIOS) to power down. But, it
only works with certain HALs and those might be the difference
between the machines. Also check for any related BIOS power/shutdown
settings.

A bit more at www.jsiinc.com for "PowerdownAfterShutdown"