By Emily / Last Updated March 19, 2021


“I have Windows 7 on my Acer computer. It worked well yesterday. But now, when I turn on my computer, it fails and is stuck in a blue screen with an error code: 0xc0000098. It said “Your PC needs to be repaired, and the Boot Configuration Data file doesn’t contain valid information for an operating system.” It prompts that I need to use the recovery tools, but I don’t have any installation media. Is there any available Boot BCD error Windows 7 fix without CD?”

Boot Bcd Error

What is Boot BCD in Windows 7/8/10?

BCD (Boot Configuration Data) is a firmware-independent database for boot-time configuration data. It is required by new Windows Boot Manager and replaces the boot.ini used by NTLDR. It contains the menu entries presented by the Windows Boot Manager.

Generally, BCD is saved in a data files. On UEFI boot computer, the file is located at “/EFI/Microsoft/Boot/BCD” on the EFI system partition. On BIOS boot computer, it is located at “/boot/BCD” on the active partition.

What causes Boot BCD error?

Boot Configuration Data is quite important for loading and running the operating system successfully. Therefore, when it gets corrupted or lacks crucial information, then your computer cannot access the necessary files of the Windows operating system on the hard disk during boot. Finally, OS could not be loaded along with various Boot BCD error codes like 0xc00000f, 0xc0000034 and 0xc0000098 (in the Scenario). So what actually causes this error?

▸One of the most common cause is that BCD has no OS entries, which can result from sudden power failure, boot sector virus infection, disk write errors during configuring the BCD manually.

▸ Another main cause is an incompatible device driver installed on the current hard drive, which always happens after you update your Windows system.

How to fix Boot BCD error without CD in Windows 7/8/10?

To repair BCD boot errors without using a Windows installation disc, you can use AOMEI Partition Assistant Standard . It is a free but powerful disk manager, with which you can create a bootable media on another working computer, and then easily repair damaged BCD/MBR in WinPE mode. So, the Windows setup CD is not required.

Next content is about Boot BCD error Windows 7 fix without CD via AOMEI Partition Assistant.

Step 1. Insert an empty USB to a working Windows computer. Free download, install and launch AOMEI Partition Assistant on the computer.

Download Freeware Win 10/8.1/8/7/XP
Secure Download

Step 2. Click “Create Bootable Media” under the top“Wizards” volume. Then follow the wizard to make a bootable USB drive. (Note: the bootable USB contains the installed AOMEI Partition Assistant.)

Make Bootable Media

Step 3. Plug the bootable USB to your computer on which Windows fails to boot and start it. Get into BIOS to change the boot priority. When loaded, you’ll see AOMEI Partition Assistant running.

Change Boot Order

Step 4. In the main console of AOMEI Partition Assistant Standard, right-click the disk with damaged MBR and choose “Rebuild MBR”.

Rebuild System Disk MBR

Step 5. Select the type of MBR for your current Windows operating system, click “OK” to continue.

Choose MBR Type

Step 6. Click “Apply” and “Proceed” to commit the operations.


After it is accomplished, restart your computer to check whether this Boot BCD error is fixed or not.

Tip: Besides rebuilding MBR, you can also use AOMEI Partition Assistant Standard to check bad sectors on the system partition and fix them, or check the entire hard drive for errors via “Surface Test”.

Further reading: how to manually rebuild BCD?

To fix Boot BCD error in Windows, if you have Windows installation CD or DVD, you can take following steps to manually rebuild BCD:

1. Insert the installation disc and boot computer from it.

2. At the install screen, click “Repair your computer”.

3. At the “System Recovery Options” screen, select “Command Prompt” option.

Access Cmd Win7

4. A command prompt window will now open. Then execute the below commands.

  • bootrec.exe /fixmbr

  • bootrec.exe /fixboot

  • bootrec.exe /scanos

  • bootrec.exe /rebuildbcd

Final Words

AOMEI Partition Assistant offers an effective Boot BCD error fix without CD for Windows 7/8/10. To avoid such annoying situation in future, you can clone Windows to external hard drive for a backup.

If you want to experience more advances functions such as extending system partition without reboot, converting system disk between MBR and GPT partition styles, recovering lost partitions, etc, please upgrade to Professional edition. To deal with Server boot issues caused by damaged MBR or BCD, you can try AOMEI Partition Assistant Server.