How to Fix Stop Error Code “0x0000009f” in Windows 7
Once in a while you may have to face the fatal blue screen commonly known as BSOD (Blue Screen Of Death) on your Windows 7 PC. “0x0000009f” is one of the BSOD critical errors that you may face when Windows needs to shut down abruptly due to a kernel issue. Windows is designed to shut down in such cases as a failsafe to prevent harming your PC. If you do not take care of this error, it may occur more frequently than it is perhaps occurring now, leading to total system corruption.
Normally the stop error message appears like the following:
STOP 0x0000009F (parameter1, parameter2, parameter3, parameter4)
Here, the parameters are hex values. Parameters 2, 3, and 4 depend on value of parameter 1. Normally this issue arises when system CPU frequently reaches 100% utilization. This is caused by system file "ntkrnlpa.exe" (using Process Explorer).
- You may face this stop error code “0x0000009f” due to several reasons.
- There can be a power supply problem, although this is not the most common cause.
- Most likely these are caused by driver issues. If you have added any new device or updated any of the device drivers, and if the driver fails to handle the power state properly for the attached device, this problem may occur.
- If a device driver happens to be in an invalid or inconsistent power state due to either shutting down or going into or coming out of hibernation/standby modes, BSOD may show and the system will be in the forced reboot state.
Thankfully, Microsoft has released a hotfix for this problem!
However, as a word of caution, “0x0000009f” error can be caused due to any of the reasons as described above; so figure out the exact reason before you try out the resolution. You can download the supported hotfix from Microsoft. Before you download Hotfix, make sure you can see "Hotfix download available" link on the particular support page that describes your problem. If there is no link, it means that Microsoft has not yet released a Hotfix for the particular problem.
In this troubleshooting guide, you can find the step by step troubleshooting for “0x0000009F" Stop error in Windows 7 when the computer enters or returns from the Soft Off (S5) power state.
- Check if you have the latest hardware drivers installed, especially for the chipset and video drivers. If you're comfortable with driver installations, you can individually find and install current drivers from your OEM website.
- Download the provided hotfix from Microsoft support page. Such hotfixes are listed under individual operating systems with separate x86/x64 platforms. Download the correct version of the hotfix. Always refer to the “Applies To" section in articles to determine the actual operating system that each hotfix applies to.
- You will find two files: The MANIFEST files (.manifest) and the MUM files (.mum) installed in each environment separately under the "Additional file information for Windows 7" section. Select the required file; you would need to provide your valid e-mail address for Microsoft to send you a download link.
- Install the hotfix after downloading from the link you received in your email, and you will have fixed the stop error.
If your “0x0000009f” error is not solved yet or has been caused by some other reason, you can call iYogi tech experts 24x7 to get it fixed. iYogi technicians can provide tech support to resolve your PC hardware and software related issues over remote or phone call and can help you resolve this issue too.