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Fix and Repair EFI Bootloader in Windows 10/8/7

Tracy King updated on Nov 12, 2020 Partition Manager | How-to Articles

PAGE CONTENT:
Use bootable disk to repair EFI bootloader on Windows 10/8/7
Fix EFI bootloader in Windows 7 (2 Methods)
Repair EFI bootloader in Windows 10/8 (2 Methods)

Are you having boot problems in your computer with the EFI bootloader? Having problems in your EFI bootloader that you are unable to boot Window system such as Windows 10, 8 or 7 smoothly in your PC? Here in this article, we'll provide you with effective solutions here to help you directly repair EFI bootloader and fix EFI boot errors in Windows 10/8/7. You can follow below methods to fix and repair EFI bootloader:

Note: If you prefer to fix EFI bootloader in Windows 10/8/7 with an easy but effective way, you can try Method 1 to apply professional partition manager software for help;
If you prefer free method and you are quite familiar with Windows system management jobs, Method 2 or 3 will guide you to fix EFI boot in Window 10/8/7 then.

Method 1. Use bootable disk to repair EFI bootloader on Windows 10/8/7

If you are having Windows EFI bootloader problems and unable to boot computer smoothly in Windows 10/8/7, don't worry. Professional partition manager software will support you to create a bootable disk to repair corrupted EFI bootloader without any problems. You may Google EaseUS Partition Master online or directly click below download button to get this partition manager software for fixing Windows 10/8/7 EFI bootloader:

Your Reliable Choice - EaseUS Partition Master

  • Transfer free disk space from one drive to another directly.
  • Resize/move, merge, clone partition, and check file system error.
  • Clone disk, convert to MBR/GPT, convert to dynamic/basic, and even wipe data.
  • Migrate OS, increase partition space, and more

Now let's see how to fix Windows 10/8/7 EFI bootloader issue with EaseUS Partition Master:

Step 1. Create a WinPE bootable disk.

  • Download and launch EaseUS Partition Master on a new PC which runs the same system as yours.
  • Click "WinPE Creator" on the toolbar. And select to create the bootable disk on a USB drive. If your computer has a CD/DVD drive, you can also create the bootable disk to CD/DVD.
  • Click "Proceed" to finish the process.
create a bootable disk

Step 2. Rebuild MBR.

  • Connect the bootable USB or CD/DVD to your PC.
  • Press "Del" when you are restarting the computer. Boot your computer from "Removable Devices" or "CD-ROM Drive". And then EaseUS Partition Master will run automatically.
  • Right-click the disk whose MBR is damaged. Choose "Rebuild MBR" to continue.
rebuild MBR
  • Select the type of MBR with the current operating system. Then, click "OK".
rebuild MBR
  • Click the "Execute 1 Operation" button at the top-left corner and click "Apply" to build the MBR. After that, your computer can boot normally again.
rebuild MBR

After this, you can set BIOS boot order from your PC again. 

Notice:
If you lose some important files or data in the system partition after fixing EFI and rebooting system, don't worry. You can apply professional data recovery software - EaseUS Data Recovery Wizard to restore all your lost data with ease.

Method 2. Fix EFI bootloader in Windows 7

The ways to fix EFI bootloader are very different with or without Installation Media. Let's see how to fix EFI bootloader in Windows 7 with or without Installation Media:

2.1 Fix Windows 7 EFI bootloader with Installation Media

If you have the Installation Media, follow below tips to fix EFI boot in Windows 7:

  • Insert Windows 7 Installation Media (DVD/USB etc.) in your PC.
  • Restart PC and boot from Installation Media > Select "Repair Your Computer" > Select operating system and click next;
  • Choose Command Prompt > Type below command orders and hit Enter each time:

diskpart
sel disk 0
list vol

  • Verify the EFI partition is using FAT32 file system and assign a drive letter to it > Type command and hit Enter each time:

sel vol
assign letter=:
exit
cd /d :\EFI\Microsoft\Boot\
bootrec /fixboot>

After all these steps, you can then reboot PC, setting boot order from PC in BIOS. 

2.2 Fix Windows 7 EFI bootloader without Installation Media

If you don't have Installation Media, here below tips shall help you to fix EFI bootloader in Windows 7 then:

  • Restart PC and tab F8 till the Windows Splash Screen appears;
  • Select Repair your computer > Select Command Prompt from Recovery Options;
  • Type below command orders and hit Enter each time:

diskpart
sel disk 0
list vol

  • Verify if the EFI partition is using the FAT32 file system and assign a drive letter to it > Type below command orders and hit Enter each time:

sel vol
assign letter=:
exit
cd /d :\EFI\Microsoft\Boot\
bootrec /fixboot

  • Rebuild BCD store, type below orders in CMD and hit Enter each time:

ren BCD BCD.old
bcdboot c:\Windows /l en-us /s: All

Note: If you are creating boot entries on an attached USB flash drive or external hard drive, add /f between the ":" and "All".

If you are a Windows 10, 8.1 or 8 user, relax, in Method 3, you'll find suitable solutions to fix EFI bootloader in Windows 10/8.1/8 with ease.

Method 3. Repair EFI bootloader in Windows 10/8

Windows 10/8.1/8 users can also have two access to fix repair EFI bootloader with or without Installation Media. You may choose to fix this problem on your own:

3.1 Repair Windows 10/8 EFI bootloader with Installation Media

  • Insert Installation Media with PC and restart to boot from the Media;
  • For Windows 8.1/8 users: 

Select "Repair Your Computer" > "Troubleshoot" > "Command Prompt".

  • For Windows 10 users:

Select "Repair Your Computer" > "Troubleshoot" > "Advanced Options" > "Command Prompt".

  • Type below command orders and hit Enter each time:

diskpart
sel disk 0
list vol

  • Verify the EFI partition is using FAT32 file system and assign a drive letter to it > Type command and hit Enter each time:

sel vol
assign letter=:
exit
cd /d :\EFI\Microsoft\Boot\
bootrec /fixboot

3.2 Repair Windows 10/8 EFI bootloader without Installation Media

If you don't have Installation Media for Windows 10/8.1/8, follow below guide to repair Windows 10/8.1/8 EFI bootloader without Installation Media:

  • Restart PC and tab F8 till Windows Splash Screen appears.
  • Select Repair your computer > Click Command Prompt from Troubleshoot.
  • Type below command orders and hit Enter each time:

diskpart
sel disk 0
list vol

  • Verify if the EFI partition is using the FAT32 file system and assign a drive letter to it > Type below command orders and hit Enter each time:

sel vol
assign letter=:
exit
cd /d :\EFI\Microsoft\Boot\
bootrec /fixboot

  • Rebuild BCD store, type below orders in CMD and hit Enter each time:

ren BCD BCD.old
bcdboot c:\Windows /l en-us /s : All

Note: If you are creating boot entries on an attached USB flash drive or external hard drive, add /f between the ":" and "All".

Do You Need Specialized Services for System Boot Issues?
EaseUS also provides 1-on-1 remote assistance to fix the boot issue. If the solution above does not work for you, please contact our professionals via Email or LiveChat in this page. To ensure our professional assistance work, you are suggested to connect the unbootable system drive to a healthy computer when getting connected with us.

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