Windows 7 Blue Screen: Error 9f

Hi,

Check this thread for information on how to use BlueScreenView, MyEventViewer and other methods
to troubleshoot BlueScreens - top 3 replies.

http://social.answers.microsoft.com/Forums/en-US/w7repair/thread/c675b7b8-795f-474d-a1c4-6b77b3fcd990

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References to Vista also apply to Windows 7.

This "could" be a power supply problem though it is not the most common cause.

9f is likely a driver issue. Antivirus/antispware/security programs can also cause these issues.
Have you added devices lately or updated drivers - be sure to check in Windows Updates to see
if a driver was updated prior to this occurring. This could also be caused by a loose card or cable
and even a weak power supply.

That error means a driver is not handling the power state properly. Check in Control Panel - Device
Manager to be sure major drivers are not shut off during sleep - double click Display Adapter - NIC
and WIFI - Sound and others - Power Management tab - uncheck Allow computer to turn off power.
Maybe only one has an issue.


Start - type in Search box - MSCONFIG  find at top - Right Click - RUN AS ADMIN

General Tab - check Diagnostic Start  - APPLY / OK  -  REBOOT

Try it now. If it still blue screens think Video Driver. If not think NIC, Wifi, Sound, or......
(and it still could be video interacting with something else). See next message for my
generic driver update methods.

BCCode: 9F  0x0000009F  <-- read this
http://www.faultwire.com/solutions-fatal_error/DRIVER-POWER-STATE-FAILURE-0x0000009F-*1167.html?order=date

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Look in the Event Viewer to see if anything is reported about those.
http://www.computerperformance.co.uk/vista/vista_event_viewer.htm

MyEventViewer - Free - a simple alternative to the standard event viewer of Windows.
TIP - Options - Advanced Filter allows you to see a time frame instead of the whole file.
http://www.nirsoft.net/utils/my_event_viewer.html

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Here are some methods to possibly fix the blue screen issue. If you could give the Blue Screen
info that would help. Such as the BCC and the other 4 entries on the lower left. And any other
error information such as STOP codes and info such as IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.

As examples :

BCCode: 116
BCP1: 87BC9510
BCP2: 8C013D80
BCP3: 00000000
BCP4: 00000002

or in this format :

Stop: 0x00000000 (oxoooooooo oxoooooooo oxooooooooo oxoooooooo)
tcpip.sys - Address 0x00000000 base at 0x000000000 DateStamp 0x000000000


This is an excellent tool for posting Blue Screen Error Information

BlueScreenView scans all your minidump files created during 'blue screen of death'
crashes, and displays the information about all crashes in one table - Free
http://www.nirsoft.net/utils/blue_screen_view.html


Many BlueScreens are caused by old or corrupted drivers, especially video drivers however
there are other causes.

You can do these in Safe Mode if needed or from Command Prompt from Vista DVD or
Recovery Options if your system has that installed by the maker.

How to Boot to the System Recovery Options in Windows 7
http://www.sevenforums.com/tutorials/668-system-recovery-options.html

You can try a System Restore back to a point before the problem started if there is one.

How to Do a System Restore in Windows 7
http://www.sevenforums.com/tutorials/700-system-restore.html

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Start - type this in Search Box ->  COMMAND   find at top and RIGHT CLICK  -  RUN AS ADMIN

Enter this at the prompt - sfc /scannow

How to Repair Windows 7 System Files with System File Checker
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
generates in Windows Vista cbs.log (and Windows 7)
http://support.microsoft.com/kb/928228

The log might give you the answer if there was a corrupted driver. (Does not tell all the possible
driver issues).

Also run CheckDisk so we can rule out corruption as much as possible.

How to Run Check Disk at Startup in Windows 7
http://www.sevenforums.com/tutorials/433-disk-check.html

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Often updating drivers will help, usually Video, Sound, Network Card  (NIC), WiFi, 3rd party
keyboard and mouse, as well as other major device drivers.

Manually look at manufacturer's sites for drivers - and Device Maker's sites.
http://pcsupport.about.com/od/driverssupport/ht/driverdlmfgr.htm

Installing and updating drivers in Windows 7 (updating them manually is preferred to ensure the latest
from System maker and Device makers are found)
http://www.sevenforums.com/tutorials/43216-installing-updating-drivers-7-a.html

How To Disable Automatic Driver Installation In Windows Vista - Drivers
http://www.addictivetips.com/windows-tips/how-to-disable-automatic-driver-installation-in-windows-vista/
http://technet.microsoft.com/en-us/library/cc730606(WS.10).aspx

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How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart
unexpectedly
http://support.microsoft.com/kb/958233

Troubleshooting Vista Blue Screen, STOP Errors (and Windows 7)
http://www.chicagotech.net/vista/vistabluescreen.htm

Understanding and Decoding BSOD (blue screen of death) Messages
http://www.taranfx.com/blog/?p=692

Windows - Troubleshooting Blue Screen Errors
http://kb.wisc.edu/page.php?id=7033

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In some cases this might be required.

StartUp Repair from Recovery Options or Windows 7 disk

How to Run a Startup Repair in Windows 7
http://www.sevenforums.com/tutorials/681-startup-repair.html

How to Boot to the System Recovery Options in Windows 7
http://www.sevenforums.com/tutorials/668-system-recovery-options.html

How to Create a Windows 7 System Repair Disc
http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html

Hope this helps.

Hi,

References to Vista also apply to Windows 7.

Updating drivers, BIOS, and control software (if any) is a good idea.

This is my generic how to for proper driver updates :

For Drivers check System Maker as fallbacks and Device Maker's which are the most current.
Control Panel - Device Manager - Display Adapter - write down the make and complete model
of your video adapter - double click - Driver's tab - write down the version info. Now click UPdate
Driver (this may not do anything as MS is far behind certifying drivers) - then Right Click -
Uninstall - REBOOT this will refresh the driver stack.

Repeat that for Network - Network Card (NIC), Wifi, Sound, Mouse and Keyboard if 3rd party
with their own software and drivers and any other major device drivers you have.

Now go to System Maker's site (Dell, HP, Toshiba as examples) (as rollback) and then Device
Maker's site (Realtek, Intel, Nvidia, ATI as examples) and get their latest versions. (Look for
BIOS, Chipset and software updates at System Maker's site while there.)

Download - SAVE - go to where you put them - Right Click - RUN AD ADMIN - REBOOT after each
installation.

Always check in Device Manager - Drivers tab to be sure the version you are installing actually
shows up. This is because some drivers rollback before the latest is installed (sound drivers
particularly do this) so install a driver - reboot - check to be sure it is installed and repeat as
needed.

Repeat at Device Makers - BTW at Device Makers DO NOT RUN THEIR SCANNER - check manually
by model.

Manually look at manufacturer's sites for drivers - and Device Maker's sites.
http://pcsupport.about.com/od/driverssupport/ht/driverdlmfgr.htm

Installing and updating drivers in Windows 7 (updating them manually is preferred to ensure the latest
from System maker and Device makers are found)
http://www.sevenforums.com/tutorials/43216-installing-updating-drivers-7-a.html

If you update drivers manually then it is a good idea to disable Driver Installations in Windows
Updates, this leaves Windows Updates ON however it will not install drivers which will usually be
older and cause issues. If Updates suggests a new driver then HIDE it (Right Click on it) and
then go look for new ones manually if you wish.

How To Disable Automatic Driver Installation In Windows Vista - Drivers
http://www.addictivetips.com/windows-tips/how-to-disable-automatic-driver-installation-in-windows-vista/
http://technet.microsoft.com/en-us/library/cc730606(WS.10).aspx

Hope these help.