A Windows XP SP3-based computer loses wireless connectivity when it resumes from standby or from hibernation, or you receive an error message when you try to put the computer in standby or in hibernation

On a Windows XP Service Pack 3 (SP3)-based computer, you experience one of the following issues:

• The computer loses wireless connectivity when you resume the computer from standby or from hibernation.
• You cannot put the computer in standby or in hibernation. Additionally, you receive the following error message:
  The device driver for the network adapter name is preventing the machine from entering Standby or Hibernation. Please close all applications and try again. If the problem persists, you may need to update the driver.

The issue may occur if the wireless network adapter driver does not implement or does not support power management according to the Network Driver Interface Specification (NDIS).

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

To work around this issue, follow these steps:

1. Click Start, and then click Run.
2. Copy and then paste (or type) the following command in the Open box, and then press ENTER:
   ncpa.cpl
3. Right-click the network connection that has lost wireless connectivity. Or, right-click the network connection that prevents the computer from entering standby or hibernation. Then, click Properties.
4. Click the General tab, and then click Configure.
5. Click the Power Management tab, click to clear the Allow the computer to turn off this device to save power check box, and then click OK.