🚀 go-pugleaf

First, make sure that APM is not Disabled in your BIOS.

To install the NT Apm/Legacy Interface Node (some of these steps may take a
long time - several minutes, so be patient):

Click Start, Control Panel, Add Hardware
Click Next
On the "Is the hardware connected?" panel, select "Yes..."; click Next
Scroll down to the bottom, select "add a new hardware device"; click Next
Select the "Install the hardware that I manually select..."; click Next
Select "Show All Devices"; click Next (a minute or more may go by with no
apparent action - be patient - I've known this step to take more than 5
minutes on some slower computers!)
Under Manufacturer, select "Microsoft" (not "Microsoft Corporation")
Under Model, select NT Apm/Legacy Interface Node; click Next
Click Next again

If your computer doesn't have the corresponding hardware, you will probably
get a panel that says something like "The software for this device is now
installed, but may not work correctly".

If your computer does have the corresponding hardware you may get a similar
panel, but it will say "Windows has finished installing the software for
this device".  You may also get a pop up "bubble" above the Task Bar saying
"Found new hardware".

Click Finish

Open up the Power Options panel (Start, Control Panel, Power Options).
There should now be a tab for APM.  Select this tab and add a check mark to
"Enable Advanced Power Management support".  On the Power Schemes tab, you
should see rows for System Standby: and System hibernates: that weren't
there before.  Make sure you click OK or Apply before closing this panel.

This process has fixed the "won't power off" problem on several of our
computers, but is not guaranteed to work in all cases.  I had an old Pentium
computer that Windows 95 could power off, but Windows 2000 and XP could not.

Please be aware that on some computers, Standby and Hibernation are mutually
exclusive.  If you configure the computer to go into Standby after being
idle for some time, it will do that.  But, it will not "wake up"
automatically so the computer can Hibernate later.  You have to choose
between going into Standby or Hibernation.  There is no indication anywhere
on that I have found to alert one to this issue.  ACPI compliant computers
should not have this problem, but some older computers that support APM do.

When the NT Apm/Legacy Interface Node is properly installed, it will show up
in Computer Management, Device Manager if you select View, Show Hidden
Devices.  It will appear as a component under NT Apm/Legacy Support.  If
your computer is a mobile computer (e.g. laptop), you may also find you now
have a Microsoft APM Legacy Battery under Batteries and you can configure
battery alarms in Power Options.