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Stopping a Device

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The PnP manager directs drivers to stop a device in the following situations:

  • To rebalance the hardware resources being used by the device. Rebalancing is typically necessary when a new device is enumerated that requires a resource already in use.

  • To disable the device in response to a Device Manager request (Windows 98/Me only). Windows 2000 and later versions of Windows send remove IRPs in this situation; see Understanding When Remove IRPs Are Issued.

  • After a failed IRP_MN_START_DEVICE request (Windows 98/Me only)

This section covers the following topics:

Stopping a Device to Rebalance Resources

Stopping a Device to Disable It (Windows 98/Me)

Stopping a Device after a Failed Start (Windows 98/Me)

Handling Stop IRPs (Windows 2000 and Later)