Windows Error Code 0xc00000e9 – Causes and How to Fix It

Windows is among the most popular OS. But, like many other technical glitches, Windows also faces a few common errors that can be easily fixed under proper guidance. One such error is the Windows error code 0xc00000e9. It is a Windows Boot Manager error, which is quite common and indicates either a corrupted system file or a hardware failure. Encountered during the boot process, the error appears right after the system starts but before the login screen. 

The error shows up like:

“An unexpected I/O error has occurred. Error code: 0xc00000e9”

In this blog, we have discussed the details of what causes the error and how you can fix it in Windows 10, Windows 8, Windows 7 and Windows Vista.

Windows 0xc00000e9 Error Code – Causes

The Windows error code Oxc00000e9 is always related to the boot process. Mostly, an input/output error or I/O error arises when your system is not able to access disk or drive. This suggests that the system is unable to read or copy data.

There can be several reasons behind this error, such as:

  • Damaged I/O ports
  • Problems with Windows Update
  • Corrupt system files  
  • Windows Registry issues
  • Wrongly aligned components – a disconnected hard drive that is not linked to the motherboard.
  • A boot sector virus or other malware.
  • Improperly configured BIOS, CMOS and UEFI settings

Windows Error Code 0xc00000e9: How to fix it

Here are different ways in which you can fix this error code in Windows 10, Windows 8, Windows 7 and Windows Vista”

Reboot your computer: The first thing that comes to our mind when any error occurs in the system is rebooting the computer. You can try ‘hard reset’ by pressing the power button until it shuts off the computer. Then, turn it back on.

Disconnect all the external devices: Try removing peripherals such as flash drives, external hard drives and other USB devices. Once you disconnect, restart the computer. You can also try removing external devices one by one to confirm which one is at fault. 

Scan your system for errors: If you find the OS loading successfully after the reboot, use the windows Error Checking tool and the SFC scan now command to check the system files and hard drive for any issues.

You can also run the Windows Error Checker tool using the ‘chads command’ in Command Prompt.

Boot in safe mode: When the system doesn’t boot normally, you can try accessing it in safe mode. If it works, you can perform several troubleshooting steps from within Windows. 

Scan the PC for Malware: A virus can also be a reason that Windows is not starting properly. You should use a bootable antivirus tool. Download an antivirus software on another system and copy it to a bootable drive. You can now scan the system through a command prompt. 

Change the boot order: If you have installed a new hard drive recently, connected a USB device or plugged in an external drive, the boot sequence may have changed. It can also occur while updating the system BIOS. You need to make sure that the hard drive on which Windows is installed is on the top of your boot sequence.

Other things that you can try to fix the error includes updating all the drivers, testing the hard drives, performing a windows Startup Repair and more.

About the owner of Microsoft Windows and His Family

Microsoft Windows was founded back in the year 1985 and has been popular as the most used operating system across the globe.

The world knows the name of Bill Gates, as the Co-founder of Microsoft. As much as he is known for his corporate position and wealth, Bill Gates is also a family man who with his wife Melinda Gates have raised three children, Jennifer Katherine Gates, Rory John Gates and Phoebe Gates. 

His son, Rory John Gates has graduated in the year 2018 from high school and is reportedly enrolled in the Chicago (University of Chicago). All three siblings, including Jennifer and Phoebe keep a low profile, despite the prevalence of their family name. 


Radhe Gupta
Radhe Gupta is an Indian business blogger. He believes that Content and Social Media Marketing are the strongest forms of marketing nowadays. Radhe also tries different gadgets every now and then to give their reviews online. You can connect with him...

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