How to Fix BOOTMGR Is Missing Windows 10 Without CD or USB

If you’re encountering the “BOOTMGR Is Missing” error on your Windows 10 without a CD or USB, you’re in the right place.

Restart Your Computer

Once your computer has restarted, pay attention to any error messages that appear on the screen. If you continue to see the “BOOTMGR Is Missing” error, you may need to use a Windows installation CD or USB to fix the issue. If you don’t have access to these, you can try using the Windows Recovery Environment (WinRE) instead.

To access WinRE, restart your computer and press the F8 key repeatedly as it boots up. This will bring up the Advanced Boot Options menu. From there, select Repair Your Computer and follow the on-screen instructions to access WinRE.

Once in WinRE, you can use the Command Prompt to run the bootrec command to fix the “BOOTMGR Is Missing” error. Simply type bootrec /fixboot and press Enter to repair the boot sector.

After running the command, restart your computer to see if the issue has been resolved. If not, you may need to seek further assistance or consider using professional recovery tools like EaseUS Partition Master to resolve the issue.

Check and Adjust Boot Order in BIOS

To check and adjust the boot order in BIOS, you will need to access the BIOS menu during the startup process of your computer.

1. Restart your computer and look for the key to access the BIOS settings. This is usually displayed on the screen during startup, and commonly it is the F2, F10, F12, or Del key.

2. Once in the BIOS menu, navigate to the “Boot” tab using the arrow keys on your keyboard.

3. Look for the “Boot Order” or “Boot Sequence” option. This is where you can change the order in which your computer looks for bootable devices.

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4. Use the arrow keys to move your desired boot device to the top of the list. This is typically your primary hard drive or SSD.

5. Once you have adjusted the boot order, save your changes and exit the BIOS menu. This is usually done by navigating to the “Exit” tab and selecting “Save and Exit.”

After adjusting the boot order in BIOS, your computer will prioritize the selected boot device, which can help fix the “BOOTMGR Is Missing” error on Windows 10.

Disconnect External Devices and Check Internal Cables

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Disconnect all external devices from your computer, including USB drives, external hard drives, and any other peripherals. This will eliminate the possibility of any external devices interfering with the boot process.

Check the internal cables of your computer to ensure they are securely connected. Sometimes loose cables can cause the BOOTMGR is Missing error. Make sure all cables are properly seated in their respective ports.

If the issue persists after disconnecting external devices and checking internal cables, you may need to consider other troubleshooting methods such as using a Windows installation CD or USB to repair the BOOTMGR error.

Repair MBR and Rebuild BCD from WinRE

First, boot your computer into WinRE by restarting your computer and pressing the necessary key to enter the boot menu. Select “Troubleshoot” > “Advanced options” > “Command Prompt”.

Once in the Command Prompt, type bootrec /fixmbr and press Enter. This command repairs the Master Boot Record (MBR) of your computer.

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Next, type bootrec /rebuildbcd and press Enter. This command rebuilds the Boot Configuration Data (BCD) of your computer.

After running these commands, restart your computer and check if the issue has been resolved. If the “BOOTMGR Is Missing” error persists, you may need to seek further assistance or use alternative methods to fix the issue.

This method allows you to repair the MBR and rebuild the BCD directly from the WinRE environment without the need for a CD or USB.

Run Startup Repair from WinRE

From the advanced options menu, select Troubleshoot, then Advanced options, and finally Startup Repair. This will initiate the Startup Repair tool and begin diagnosing and fixing any issues with the BOOTMGR.

The tool will attempt to repair the BOOTMGR and any related problems, so be patient as it runs through the process. Once it’s finished, restart your computer to see if the issue has been resolved.

If you’re still experiencing problems after running Startup Repair, you may need to consider other troubleshooting options or seek additional help from a professional.

Restore System from Backup Image

To restore the system from a backup image without a CD or USB in Windows 10, follow these steps:

Step 1: Boot your computer using the Windows installation disk or USB drive.

Step 2: Select “Repair your computer” from the installation screen.

Step 3: Click on “Troubleshoot” and then “Advanced options.”

Step 4: Choose “System Image Recovery” from the list of advanced options.

Step 5: Select the backup image you want to restore from and follow the on-screen instructions to complete the process.

If you don’t have a Windows installation disk or USB drive, you can also access the “System Image Recovery” option by booting into the Windows Recovery Environment (WinRE). To do this, restart your computer and repeatedly press the “F8” key until the WinRE menu appears.

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Once you’ve accessed the WinRE menu, follow the same steps as outlined above to restore your system from a backup image.

Replace or Clean Install on New Hard Drive

Step Description
1 Back up your data from the old hard drive to an external storage device.
2 Shut down your computer and install the new hard drive.
3 Boot your computer using a Windows installation disc or USB drive.
4 Follow the on-screen instructions to reach the “Install Now” screen.
5 Choose “Custom (advanced)” installation.
6 Select the new hard drive as the installation destination.
7 Complete the installation process and let Windows set up the new hard drive.
8 Restore your data from the external storage device to the new hard drive.
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