6 Ways to Fix Windows 10 Error Code 0xc00000e9

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Error code 0xc00000e9: What does this mean?

Error code 0xc00000e9 is a common Windows Boot Manager error that may occur during the startup process, indicating a hardware failure or corruption of system files. It displays a message before the Windows login screen stating an unexpected input/output error has occurred: Error code: 0xc00000e9.

Error code 0xc0000e9 frequently appears during the Windows startup process. An I/O (Input/Output) issue occurs when the system is unable to access a drive or disk, preventing it from reading or copying data. This error 0xc0000e9 can have several potential causes, such as:

• Damaged system files or missing specific files or drivers.
• A faulty or damaged hard drive connector on the motherboard.
• Sudden interruption in communication between your computer and a removable storage device. For example, your PC might have unexpectedly lost contact with the installation disc while trying to install Windows.
• Corrupted registry files.
• Defective installation media; a faulty hard drive or controller. For instance, the disk itself could be faulty, or specific files might be missing, corrupted, or damaged.
• An incorrect Windows 10 installation ISO.
• A malware attack.

How to Fix Windows 10 Error Code 0xc00000e9

Want to know how to fix the Windows 10 error code 0xc00000e9 on your PC? Check out these six solutions.

• Boot into Safe Mode and scan your Windows for errors
• Run a Windows Startup Repair
• Scan your computer for malware or other issues
• Change the boot order to fix error 0xc00000e9
• Update the Volume Boot Code to use BOOTMGR
• Reinstall Windows 10 to fix error 0xc00000e9

Before we get to the methods, watch the video below and learn how to fix error code 0xc00000e9 on Windows 11/10.

• 0:17 Restart your computer
• 0:45 Enter BIOS setup
• 2:19 Load optimized defaults

So let me explain the remedies and the solutions that I talked about.

Method 1: Boot in Safe Mode and Scan for Windows System Errors

If Windows fails to start up properly, you can boot into Safe Mode. From there, you can attempt a few troubleshooting steps and scan your Windows for errors. Safe Mode is also referred to as Diagnostic Startup mode.

How do I start in Safe Mode?

Please press and hold the Shift key on your keyboard, then click on the "Restart" option from the power button in the bottom right corner to restart Windows.

Once Windows boots up, you'll see an Advanced startup screen. From here, click on the following options in order to get to Safe Mode.

Troubleshoot > Advanced options > Startup Settings > Restart on the next page.

When your computer restarts, you'll be shown a list of options. Select “4” or press “F4” to start your computer in Safe Mode. If you need access to the Internet, select “5” or press “F5” to start in Safe Mode with Networking.

Once in Safe Mode, you can use the built-in Windows Error Checking tool and the SFC /scannow command. These utilities scan your hard drive and system files for any issues that might be causing startup problems.

Let's see how this might work.

Step 1: On your Windows PC, right-click the Windows logo in the bottom left corner of the screen, and then select “Windows Terminal (Admin).”

Step 2: Click Yes in the User Account Control dialog box.

Step 3: Type sfc /scannow and press the Enter key to start the scan.

Now, the System File Checker will scan every protected system file on your PC for integrity. This may take some time to complete. If any errors are found and fixed, you'll receive a message. After that, you can restart your computer.

Method 2: Run Windows Startup Repair

I'll explain how to perform a Windows Startup Repair, which might fix the error. Here's how:

If Windows doesn't let you log in, you can use the Windows installation disc or USB with the Windows Automatic Repair tool. This issue may occur occasionally due to missing or corrupted system files, registry errors, or other problems that can be fixed with a Startup Repair.

You can find it in the "Advanced Boot Options" menu.

Step 1: Hold the Shift key while selecting Restart from the power icon.

Step 2: On the Choose an option screen, click Troubleshoot > Advanced options.

Step 3: Click on "Start Repair" to begin the Windows Startup Repair process.

During this process, you might be asked to provide account details and other information that can help the troubleshooting tool identify the problem.

Method 3: Scan Your Computer for Malware or Other Issues

If the virus is preventing Windows from starting, use a bootable antivirus program. Download an antivirus program for Windows on another computer and copy it to a bootable drive. Most antivirus tools usually include a bootable rescue utility that can scan your system from a Windows terminal.

This process should be straightforward, and it may take several minutes or longer for the program to scan your computer properly for viruses and other spyware. The length of the scan will depend on the number of files you have and the speed of your computer.

Download and run the Microsoft Windows Malicious Software Removal Tool. There are two versions available, one for 32-bit and one for 64-bit Windows (find out which one you have). Get the 32-bit version here: MSRT 32-bit, or the 64-bit version here: MSRT 64-bit.

Microsoft's free Malicious Software Removal Tool may not find everything, but it will search for particular common pests, and is a good place to start. If you have it installed, update it via Windows Update to make sure it can scan for the latest threats.

Method 4: Fix Error 0xc00000e9 by Changing the Boot Order

If you've added a new hard drive, connected an external drive, or attached a USB device, the boot order may have changed. A BIOS update can also cause this issue. Check your computer's BIOS or UEFI settings to make sure the hard drive that has Windows installed is at the top of the boot order.

To change the boot order in the BIOS, follow these steps: If you change the boot order, the device order for booting will change.

Step 1: Look for a notification on your computer screen when it starts up or restarts that tells you to press a certain key (usually Del or F2) to enter the BIOS setup menu. Press the key as soon as you see the notification.

Note: Since every BIOS setup utility is unique, the exact steps to change the boot order will vary from computer to computer. The menu selection or configuration setting may be labeled "Boot Options," "Boot," "Boot Order," and so on. Broader menu items like "Advanced Options," "Advanced BIOS Features," or "Additional Options" may contain the setting.

Step 2: Follow the instructions to enter your BIOS tool and look for the option to change the boot order. These settings will be found in the Boot menu of your BIOS.

The order of the devices determines the boot order, or the order in which the computer looks for operating system information. The BIOS usually refers to an internal hard drive as a “hard disk,” and will attempt to boot from it first, in the order listed on the screen.

Select the hard drive or SSD with Windows installed and press Enter.

Step 5: Save the BIOS settings before they take effect. Look for the "Exit" or "Save & Exit" menu in your BIOS program, and follow the on-screen instructions.

Step 6: Save the changes and exit the BIOS. If prompted, select Yes to confirm.

Any changes you made to the boot order and other BIOS settings have now been saved. Your computer will restart and follow the new boot order.

Method 5: Update the boot sector to use BOOTMGR

If a non-Windows default BOOTMGR boot loader is used, it might cause the volume boot code to become corrupt or linked incorrectly. To resolve this issue, update the volume boot code. To boot to a command prompt and run the required commands, follow these steps:

Step 1: Access the Advanced startup options.

Step 2: Select “Command Prompt.”

Step 3: Type the following command and press Enter:

Use the bootsect tool to apply the /nt60 parameter to the SYS directory

This changes the volume boot code on the partition that starts Windows to be compatible with the Windows operating system, BOOTMGR.

Step 4: Before closing the Command Prompt window, eject or remove the Windows USB flash drive from the USB port or the Windows installation disc from the CD/DVD drive.

Step 5: Select either “Resume” or “Restart” from the list. Windows should now start up normally.

Note: Try starting Windows normally one more time. If that fails or doesn't work, try the command bootsect /nt60 ALL.

The ALL option updates the boot code on all volumes that can be started by Windows, but not on dynamic volumes that are not connected to a basic disk partition.

The only gotcha is that, if you have a dual-boot setup, you might accidentally do the same, but opposite, thing to any operating system you booted into before.

Method 6: Fix Error 0xc00000e9 by Reinstalling Windows 10

A clean install of Windows removes all system modifications, restoring damaged or missing system files to their working state. A clean install of Windows is performed during the installation process by deleting the existing Windows installation (if present) and then installing a new operating system or reinstalling an older one. Here's how:

Step 1: Go to the Windows download page and click the "Download tool now" button under the "Windows Install Assistant" section.

Step 2: Open the executable file for the Windows 10 Installation Assistant that you downloaded.

Step 3: Click on “Accept and Install” in the license agreement window.

Note: Before proceeding, you might need to download and use the PC Health Check app. After installing it, you can check if your PC meets the upgrade requirements.

Step 4: The download will start immediately. Wait for the installation to finish.

5. When the download finishes, your computer will automatically restart to install Windows 10. Alternatively, you can choose "Restart now" to begin the installation right away. Windows 10 will set itself up and install.

How to Recover Data from Windows 10 After Fixing Error 0xc00000e9

Windows users might lose data after fixing error code 0xc00000e9. Hence, I recommend using the Data Recovery Wizard tool to restore lost Windows 10 data after fixing the error code 0xc00000e9.

So, what are the highlights of using the Data Recovery Wizard tool?

• It can recover deleted files, photos, videos, music files, documents, and more with just a few simple clicks.
• The software supports file recovery from hard drives, SSDs, USB flash drives, and pen drives.
• This tool allows file recovery even when the Windows operating system is damaged. It provides a WinPE bootable device to start your computer and retrieve data.
• Virus attacks can be frustrating as they may disrupt your computer's functionality. With this tool, you can quickly and safely recover your data.
• Data recovery is made easy with this software, even when partitions are completely lost or the system fails to recognize them.

These are the features of the Data Recovery Wizard tool, which you can easily download from its official website.

Note: To ensure a higher rate of data recovery success, do not install the data recovery tool on the original disk from which you lost your files.

Step 1. Launch the Data Recovery Wizard on your Windows 11, Windows 10, Windows 8, or Windows 7 PC. Select the disk partition or storage location where you lost data and click on "Scan".

Step 2: The software will start scanning the disk to find all lost and deleted files. Once done, click on “Filter” > “By Type” to specify the type of lost file.

Step 3. Preview and recover lost Windows files. You can double-click to preview the scanned files. Then, select the target data and click the “Recover” button to save them to another secure location on your computer or an external storage device.

Conclusions

So, the next time you see error 0xc00000e9 and your system fails to boot, don't panic. Follow the steps above, and you can quickly resolve an unexpected error without causing any damage to your Windows PC. If all else fails, you can reinstall Windows, but note that this will delete all data on the system drive. If the issue persists, replace the hard drive. A faulty or damaged HDD or SSD can cause error 0xc00000e9.

So, if you lose data while reinstalling Windows, you can always download and use a free data recovery software to get your lost files back. That's it! Hope this article helps!

"Frequently Asked Questions about the 'Unexpected I/O Error Occurred (0xc00000e9)' Message"

Do you have more questions about the unexpected error code 0xc00000e9 on your Windows PC? Check out the frequently asked questions and answers below:

What is the STATUS_PROCESS_IS_TERMINATING 0xc000009e error?

The error code 0xc00000e9, typically associated with a Windows Boot Manager issue, indicates that a hardware failure or corrupted system file has been detected during the startup process. This error is usually displayed immediately after powering on the computer, before the login screen, with the message: "An unexpected I/O error has occurred."

2. How to Run Windows Repair?

Here are the steps to perform a Windows Startup Repair: Click the Windows Start icon, then click the Power button icon. Hold down the Shift key and click Restart. On the blue screen, select Troubleshoot. Next, go to Advanced options > Startup Repair. After the Startup Repair process finishes, restart your computer.

How can I fix Windows 10 without booting?

Fix Windows 10: Boot into the Windows Advanced Startup Options menu. Go to Troubleshoot > Advanced options > Startup Repair. Wait a few minutes while Windows tries to fix startup issues without actually starting up.

How can I fix the MBR on Windows 10 without a disk, using UTF-8 encoding?

Restart your computer and force a hard shutdown each time you see the Windows logo during startup. After doing this three times, you should enter the Windows Recovery Environment (WRE) to perform a System Restore. If that doesn't work, select “Advanced options” from the menu and choose “Automatic Repair.” If all else fails, open Command Prompt from the Advanced options menu and run the following commands:

These are commands used in the Windows operating system to repair the boot sector and system files. Here are their Chinese translations: 1. `bootrec /fixmbr` - 修复主引导记录 (Repair Master Boot Record) 2. `bootrec /fixboot` - 修复引导扇区 (Repair Boot Sector) 3. `bootrec /rebuildbcd` - 重建启动配置数据 (Rebuild Boot Configuration Data Store) 4. `sfc /scannow` - 系统文件检查器扫描并修复系统文件 (System File Checker scans and repairs system files) These commands are typically utilized when Windows encounters startup issues or system files become corrupted.

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