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Stop Error 0x0000009f is also known as DRIVER_POWER_STATE_FAILURE. This blue screen of death error indicates that the driver is in an incoherent or invalid state of tension.
The most common cause of this error is obsolete driver software for your installed hardware. Another cause is an obsolete BIOS or a recent hardware change.
DRIVER_STATE_POWER_FAILURE is a blue screen error that occurs when the voltage state changes, i.e. when you shut down, restart or hibernate your computer, hibernate, and so on. During this process, all hardware installed on your computer is instructed to change its power state to shutdown, but if there is an error in a particular device driver, the device does not respond as Windows wants, and you will be faced with this STOP error.
In the following section, you will learn what causes the blue screen of the death stop error 0x0000009f and how you can correct it.
Apply Microsoft Hotfix
A supported patch is available from Microsoft. However, this fix is only intended to correct the problem described in this article. Apply this patch only to systems where the problem described in this article occurs. This patch can get additional tests. Therefore, if you are not seriously affected by this problem, we recommend that you wait for the next software update that contains this patch.
To use the patch in this package, you do not need to modify the registry.
Using the Driver Verifier
Before you begin this process, you must create a system restore point so that you can access it in the event of a problem.
This process will help you determine the exact driver that could cause this blue screen error. Remember that if the driver verifier finds a problem, your computer may trigger a BSOD again. That’s why we’ve set up a system restore point so we can easily repair the system and restore the computer to its previous state.
Using Windows SFC Scan
The “sfc /scannow” is a unique command that we will use to repair our Windows computer, and its “CMD Command Prompt” command, so you just need to open your computer’s cmd first.
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This will check all the important files your Windows needs to check itself, including some important DLL files, driver files and so on.
Open the CMD as administrator.
Enter the command “Sfc /Scannow” and press Enter.
Restart your computer and test it, if the blue screen has disappeared, it is well if you do not pass to the following solution.
Roll Back Driver Updates
If the error occurs after installing new drivers, you can try resetting the drivers to the previous version.
Go to Device Manager and expand the category to find the device with problematic drivers.
Right-click the device name and click Properties.
In the Driver tab, click the Reset Driver button and follow the on-screen instructions to reset the driver. Then restart your PC for the change to take effect.
Start Windows in a clean boot state.
The next method to solve the DRIVER_POWER_STATE_FAILURE problem is to boot Windows in a clean boot state to determine which program will crash your system. To start Windows in the “Clean Boot” state:
Press Windows image_thumb8_thumb + R to open the command box.
In the search box, type: msconfig and click OK to launch the system configuration utility.
On the Services tab, select the Hide all Microsoft services check box, and then click the Disable all button to prevent all non-Microsoft services from starting when Windows starts.
https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/bug-check-0x9f–driver-power-state-failure
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