Stop 0x0000009F or DRIVER_POWER_STATE_FAILURE

The Stop 0x9F message indicates that a driver is in an inconsistent or invalid power state.

Interpreting the Message

Table C.4 describes the information provided by Stop 0x9F messages. The value of the first parameter indicates the type of violation (see the Description column) and determines the meaning of the next three parameters.

Table C.4 Parameter Listing for Stop Message 0x9F

Parameter 1	Parameter 2	Parameter 3	Parameter 4	Description
0x00000001	Pointer to the device object	Reserved	Reserved	The device object being freed still has an incomplete power request pending.
0x00000002	Pointer to the target device object	Pointer to the device object	Reserved	The device object completed the I/O request packet for the system power state request, but failed to call PoStartNextPowerIrp.
0x00000003	Pointer to the target device object	Pointer to the device object	The I/O request packet	The device driver did not properly set the I/O request packetas "pending" or complete the I/O request packet.
0x00000100	Pointer to the nonpaged device object	Pointer to the target device object	Pointer to the device object to notify	The device objects in the devnode were inconsistent in their use of DO_POWER_PAGABLE.
0x00000101	Child device object	Child device object	Parent device object	A parent device object has detected that a child device has not set the DO_POWER_PAGABLE bit.

This Stop message typically occurs during events that involve power state transitions, such as:

Shutting down.
Suspending or resuming from standby mode.
Suspending or resuming from hibernate mode.

Resolving the Problem

The following suggestions are specific to Stop 0x9F errors. For additional troubleshooting suggestions that apply to all Stop errors, see "Stop Message Checklist" later in this appendix.

Stop 0x9F messages can occur after installing faulty applications or drivers or system services. If a file is listed by name and you can associate it with an application, uninstall the application. For drivers, disable, remove, or roll back that driver to to determine if this resolves the error. If it does, contact the hardware manufacturer for a possible update. Using updated software is especially important for backup programs, multimedia applications, antivirus scanners, and CD mastering tools.
For information about troubleshooting standby and hibernate mode issues, see "Troubleshooting Startup" in this book. Also see article 266169, "How to Troubleshoot Problems with Standby Mode, Hibernate Mode, and Shutting Down Your Computer in Windows 2000." To find this article, see the Microsoft Knowledge Base link on the Web Resources page at http://www.microsoft.com/windows/reskits/webresources.

For more information about Stop 0x9F messages, see the Microsoft Knowledge Base link on the Web Resources page at http://www.microsoft.com/windows/reskits/webresources. Search using keywords winnt, 0x0000009F, and 0x9F.