error 0xc00000e9

How to Fix The Error Code 0xc00000e9


Despite its weird, nondescript name, Windows Error Code 0xc00000e9 is one of the most common errors Windows users experience.

It leads to a blank screen when you try to boot your operating system and doesn’t allow it to initiate. There is also a scenario of this error which will not allow you to boot Windows in Normal Mode, but will work in Safe Mode.

Basically, we’re talking about an Input/output (I/O) error. Here’s how the error screen looks in Windows 10:

There was a problem with a device connected to your PC

File:\Boot\BCD

Status: 0xc00000e9

Info: An unexpected I/O error has occurred.

error 0xc00000e9

It is caused by different PC components not being able to properly connect to your computer. There could be other reasons for the Error 0xc00000e9, like misconfigured UEFI/BIOS/CMOS settings, malfunctioning hardware, or corrupt system files. One way to fix the issue is by reinstalling Windows from a DVD/USB flash drive.

See below for a more detailed description of the error and what causes it, as well as different ways to fix it.

What Causes Windows Error Code 0xc00000e9?

Among the most common reasons for the error 0xc00000e9 is:

  • The integrity of the system files is corrupted;
  • There is no contact between the hard drive and the motherboard;
  • Incorrect disconnection / connection of a removable storage device (USB drive, external hard drive);
  • Damaged registry files;
  • Damaged hard drive or its controller;
  • There is a problem with the device from which you are installing Windows (for example, a USB flash drive);
  • Errors in the downloaded Windows build (it is better to use the original Windows images);
  • Viruses.

One reason for this error could be viruses. If such a malicious piece of software has infected your PC, it could be corrupting your Registry Files or data which is related to the system’s Start process.

Even though you may be using an antivirus, but keep in mind that no defense is 100% foolproof.

An issue with your hard drive might be another reason for this malfunction. This is because the life span
of a hard drive is limited, and it depends on its quality, use, and maintenance.

So if your system is starting to cause you problems and you’re traced to source of the problem to your hard drive, perhaps it’s time to get a new one!

This problem could also occur if your computer has been abruptly shut down while downloading some important updates, which can cause the loss or corruption of data and lead to the Error code 0xc00000e9 appearing.

Constantly installing and uninstalling various programs, tools, and updates could also be a factor. When you uninstall a program or an update, for instance, you might also be removing a file that is necessary for your system to run – which could lead to problems like the ones we’re describing here.

Also, some errors could arise if a program or an update isn’t compatible with your operating system. A good piece of general advice is to always be careful what you’re installing, as well as removing from your computer!

How to fix Error Code 0xc00000e9?

Now that you know some of the reasons behind this error, you can proceed to the actual troubleshooting part. Since there’s no one single method to try, here are some of the most common fixes:

If the error 0xc00000e9 occurs when you perform a clean Windows install on your device:

  • If you are trying to install a third-party Windows build, try using a clean, original Windows image created with the Media Creation Tool;
  • If you are installing Windows from a DVD, the problem may be in the disc, so try to burn the installation image to another disk (on another computer), at the lowest possible speed, or make a bootable USB flash drive;
  • If you are installing Windows from a USB drive, try creating a bootable USB flash drive by another program, or use another USB stick.

Error 0xc00000e9 may appear unexpectedly during normal Windows operation. We recommend you check the following:

  • Turn off the computer, open the case, check the connection between the hard drive and the motherboard. Try to connect the drive to another IDE/SATA port, using another IDE/SATA cable;
  • Remove all external devices connected to your PC: flash drives, external HDDs, smartphones and so on;
  • Try resetting the BIOS settings to standard settings and checking the order of boot device selection. Your hard drive must be placed first (First Boot Device);
  •  If you have a computer with UEFI, try changing the boot mode to Legacy and disable Secure Boot;
  • Try to restore the Windows registry from a backup (https://theitbros.com/restore-windows-10-registry-from-backup-or-restore-point/).

Check Hard Drive Issues

Another fix you can try relates to the proper functioning of your hard drive.

Boot your computer from any Windows installation (rescue) disk, run the command promt in the Recovery Console, and test the disk for errors using the Chkdsk tool:

chkdsk /f /r

Check System Files

Perform offline checks on the integrity of Windows file systems using the command:

sfc /scannow /offbootdir=d:\  /offwindir=d:\windows

where D:\ is your Windows drive.

System Restore Points

If all else fails, you can always go through a System Restore. Try to roll back the system to one of the previous ones recovery points. You’ll first have to find a restore point when your computer was working fine, then you must:

  • Go to Advanced Recovery Options while booting from the Windows Installation Disc;
  • Select System Restore;
  • A list of Restore Points will appear. Choose the point from which you want to continue, making sure it is from before the error occurred.

error code 0xc00000e9

Auto Startup Repair

You should try now to recover your boot files. For this, you’ll have to:

  • Go to Advanced Recovery Option by restarting your computer and inserting the Windows Installation Disc;
  • Select Startup Repair;
  • After this is over, wait for the tool to automatically scan the system file and repair them.

Scan Your Device for Viruses

One reason for this error could be viruses. If such a malicious piece of software has infected your PC, it could be corrupting your Registry Files or data which is related to the system’s boot process.

Even though you may be using an antivirus, but keep in mind that no defense is 100% foolproof.

An issue with your hard drive might be another reason for this malfunction. This is because the life span of a hard drive is limited, and it depends on its quality, use, and maintenance.

So if your system is starting to cause you problems and you’re traced to source of the problem to your hard drive, perhaps it’s time to get a new one!

The first thing you’ll need is an antivirus program. Perform a scan of your system to find any viruses that have crept in and then remove them. You could even try using more than one antivirus, for optimal results.

The steps here are as follows:

  • Download a good antivirus program;
  • Update the Virus Definitions for the program;
  • Set in the Bootable Rescue Tool on a removable drive;
  • Restart your computer and boot using the Bootable Rescue Tool;
  • Scan PC with the antivirus and then remove all detected threats.

Rebuild Windows BCD

In some cases, the bootloader configuration (BCD) repair helps. To do this, you need to boot from the installation disk, select the recovery mode and open the Command prompt. Run the following commands and restart the computer:

bootrec.exe /FixMbr

bootrec /fixboot

bootrec /scanos

bootrec /rebuildbcd

Re-Install Windows:

Finally, if nothing else works, there’s always the option of re-installing your operating system altogether. This, of course, permanently removes all data and settings and will most likely fix the Error Code 0xc00000e9.

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  1. Posted by Ruben Mendoza

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