How to Fix Error code 0xc00000e9 in Windows 10, 7, 8 and Vista

Yehana Mccoy
4 min readAug 17, 2020


Windows error code 0xc00000e9 is a common Windows Boot Manager error that signals a hardware failure or corrupt system file encountered during the boot routine. It looks like when you start your computer but before the Windows login screen, it looks like this:

A sudden I / O error has occurred. Error code: 0xc00000e9
The directions in this article apply to Windows 10, Windows 8, Windows 7, and Windows Vista.

The causes of the error code 0xc00000e9 in Windows
The error code 0xc00000e9 has to do with the Windows boot procedure. An I / O error or error occurs when the machine cannot get through. There are many reasons why the error may appear as it is common:

Malfunction of external hardware or computer components.
I / O vents damaged.
Badly seated parts, such as a detached hard drive that is not in contact with the entire motherboard.
UEFI, BIOS, or CMOS configurations incorrectly configured.
Corrupted system files or problems with the Windows registry.
Windows Update problems.
Boot sector virus or additional malware.
How to fix 0xc00000e9 errors in Windows 10, 7, 8 and Vista
Until the error goes away, try the following steps in order:

Restart the computer. If you are unable to log into the computer, perform a hard reset by holding the power button until the computer turns off, then lower it.

Restarting your computer solves many problems. Do some research to determine the cause if the error persists.

Disconnect all external devices. Eliminate peripherals such as external hard drives, flash drives, and other USB devices, then restart your computer. These devices can sometimes interfere with the startup process. Eliminate them one at a time to determine which device is responsible for it.

Scan Windows for errors. When Windows loads successfully after restarting, use the built-in Windows error checking software along with the SFC scan check to check your hard drive and system documents for problems.

Windows Error Checker is also run from a command prompt that uses the chkdsk control.

Run safely. When Windows doesn’t start normally, it’s often safe to get into a running system. If that works, you can follow a few steps below.

Update the drivers. If you’re ready to boot into Windows, make sure all device drivers are up to date, especially those connected to I / O interfaces and mass storage.

Play the repair when Windows starts. If you are unable to log into Windows, use a Windows drive or USB drive that contains Windows repair tools. Startup Repair can fix registry errors, corrupted system files.

Scan your computer for malware. When a virus prevents Windows from starting, use a bootable anti-virus utility. Download the antivirus application for Windows to another computer and copy it to the startup disk. Includes antivirus tools.

Assessment of hard drives. The easiest way is to use a free hard drive tester. Without removing the disk. If you have command prompt access, run the application there. Another choice is to replace your hard drive with another driveway that you think works. You can try the disk.

Change the boot sequence. The boot system may have changed if you insert a new hard drive, connect to an external drive, or connect a USB device. It can also happen while updating the BIOS. Access your computer’s BIOS or UEFI configuration to make sure the drive where Windows is installed is written to the top of the boot sequence.

Update quantitative boot to take advantage of BOOTMGR. The volume boot may become corrupted or linked to the boot loader in addition to the Windows default BOOTMGR. This issue should be resolved by updating quantitative boot.

Problems with the boot code of the volume can also cause additional problems, including Hall.dll errors.

Fix the Master Boot Record (MBR). As with a boot volume, the MBR contains the data required to load Windows. The MBR tells Windows about this partition and it pushes it to work on boot, so the error can be resolved by fixing the MBR.

Disable Windows Secure Boot. When working with your computer, the Safe Boot attribute can stop applications or hardware. Temporarily disable it to see if that fixes the problem.

Perform a method restore. If the problem started to appear after setting up a new device or application, use Windows System Restore to return your working system to a previous state.

System Restore removes the changes made to Windows because of the rollback date you selected, so be sure to back up any files you want to keep.

Perform a fresh installation of Windows. All changes will be overwritten when reinstalling Windows. For this reason, damaged or lost system files are restored to a working state.

Evaluate part failures. If possible, check your computer for anything that may become disconnected or loose. Do exactly the same. If you find a hardware problem, you can repair it yourself or contact the manufacturer for assistance in accessing the computer you are repairing.



Yehana Mccoy

I am Yehana Mccoy and I am living in the United States. If any issue occurs contact us and get quickly full support.