Microsoft KB Archive/247020

= Disabling and Re-enabling APM Alters Power Schemes Timeouts =

Article ID: 247020

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q247020



SYMPTOMS
When you disable and then enable advanced power management (APM) on a computer running Microsoft Windows 2000 Professional, the power schemes change. The changes affect the automatic standby and hibernation timeout options and can cause battery power loss.



STATUS
Microsoft has confirmed that this is a problem in Microsoft Windows 2000 Professional.



MORE INFORMATION
The following tables show what the power scheme settings are when you disable or enable APM. Use the appropriate set of steps to view the changes.

To view power scheme changes on a computer that has the APM auto-enable feature:


 * 1) Install Windows 2000.
 * 2) In Control Panel, double-click Power Options and then view the power scheme, noting the settings.
 * 3) Disable APM.
 * 4) Restart the computer.
 * 5) Enable APM.
 * 6) View the power scheme again to see the changes.

Starting Behavior for the Portable/Laptop Scheme

Behavior After Disabling the Portable/Laptop Scheme

Behavior After Enabling APM Again

To view power scheme changes on a computer that supports APM but is not auto-enabled:


 * 1) Install Windows 2000.
 * 2) In Control Panel, double-click Power Options, and then view the power scheme, noting the settings.
 * 3) Enable APM.
 * 4) View the power scheme and note the changes.
 * 5) Disable APM.
 * 6) Restart the computer.
 * 7) Enable APM.
 * 8) View the power scheme to see the changes.

Starting Behavior for the Home/Office Desk Scheme

Behavior After Enabling APM and Hibernation

Behavior After Disabling the Home/Office Desk Scheme

Behavior After Enabling APM Again

Additional query words: standby

Keywords: kbbug kbnofix KB247020

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