Windows 10 Boot Repair: Fix UEFI Boot Issue on Windows 10/8/7

Tracy King updated on Sep 11, 2020 to Partition Manager | How-to Articles

How to do Windows 10 boot repair? What are the most useful ways? Read this tutorial and see how to troubleshoot.

Workable Solutions Step-by-step Troubleshooting
Fix 1. Use Startup Repair You can fix most Windows 10 UEFI boot problems using the Startup Repair tool. Boot Up Windows...Full steps
Fix 2. Use Command Prompt If you are unable to perform a startup repair, then you can try using Windows 10 installation...Full steps
Fix 3. Change BIOS Settings Windows 8, 8.1, and 10 were designed to install on the UEFI BIOS using the EFI bootloader and GPT...Full steps
Fix4. Add Disk Driver Manually installing and adding the driver to the restored Windows image can repair UEFI boot...Full steps
Fix 5. Change the SATA Mode You can change different SATA modes in different cases for Windows 10 boot repair...Full steps

Sometimes, Windows 10 fails to boot because there is a problem with the master boot record. In these cases, the master boot record needs to be repaired to restart and run. When you want to do Windows 10 startup repair, you can use the Windows 10 recovery environment includes an automatic option to accomplish this task. If this does not work, you can do it manually with Diskpart command prompt and other effective solutions. In this article, you'll find step-by-step methods to guide you to fix computer UEFI boot errors in Windows 10/8/7. Read on to find out how.  

You may also read: UEFI vs. BIOS: What's the Difference and How to Check

Method 1. Use Startup Repair for Windows 10 Boot Repair

Windows Automatic Repair is a built-in tool for users to apply and try to fix some normal errors on Windows PC. And you may also try this method to repair Windows 10, 8 or 7 UEFI/EFI boot error:

1. Boot Up Windows from Installation Media

Step 1. Insert Windows 10/8/7 installation disk or USB to your PC.

Step 2. Restart PC and boot from the disk or USB.

2. Enable Automatic Repair Option

Step 1. Click "Repair your computer" at the Install now screen.

Enable Automatic repair option to fix UEFI error.

Step 2. Click "Troubleshoot" at choosing an option screen > click "Automatic repair".

Use Automatic Repair option to fix UEFI boot error.

Step 3. Choose an account from the list to continue at the Automatic Repair screen and wait for the process to finish.

When the process completes, you can restart your PC, and then you should be able to use your computer without any problems again.

Method 2. Use Diskpart to Fix UEFI Boot Error in Windows 10

If you are a Windows 10 or 8 user and you prefer free methods to fix UEFI boot error, you may follow below two solutions to solve this issue now:

1. Enter Command Prompt from Advanced Options

Step 1. Insert Windows 10/8/7 installation disk or installation USB into PC > boot from the disk or USB.

Step 2. Click "Repair your computer" or hit F8 at the install now screen.

Step 3. Click "Troubleshoot" > "Advanced options" > "Command Prompt".

2. Run Diskpart to Set Partition ID and Assign a Drive Letter

Step 1. Type below command and hit Enter each time:

  • diskpart
  • list disk
  • sel disk 0

Run Disk Part to start fixing UEFI error.

Step 2. When the message "Disk 0 is now the selected disk" shows up, type list vol and hit Enter.

Select disk and volume to set volume ID.

Diskpart will now show the full list of volumes on your PC, find UEFI volume from the list: UEFI partition will be on Volume 2.

Step 3. Type below command and hit Enter each time: 

  • sel vol 2
  • set id=c12a7328-f81f-11d2-ba4b-00a0c93ec93b 
  • Or SET ID=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7

Set volume ID to fix volume id.

Step 4. Assign the drive letter by typing below command and click Enter:

  • assign letter=G: (Note: G shall be a unique drive letter which cannot be already used.)

Change drive letter of your selected partition.

3. Repair the Boot Record

  1. Step 1. Open Command Prompt as an administrator, enter below command:
  • cd /d G:\EFI\Microsoft\Boot\ (Note: G is the drive letter you signed to UEFI partition and remember to replace G with UEFI's partition letter)

Repair boot record on UEFI disk.

  • Enter exit when the process completes.
  1. Step 2. To repair the Boot Record, open CMD and enter below command line:
  • bootrec /fixboot

Fix boot record command.

  • Enter exit when the repair process completes.

4. Rebuild the BCD Store

Step 1. Type each command line and hit Enter each time:

  • ren BCD BCD.old
  • bcdboot C:\Windows /1 en-us /s G: /f ALL (Note: c:\ is the drive where Windows 10/8.1/8 is installed on.)

Rebuild BDC store on UEFI.

Step 2. Type exit in Command Prompt when the process completes and then restart your PC.

Now UEFI boot is fixed, and Windows 10/8/7 can be boot up on your PC again.

Method 3. Change BIOS Settings 

You need to select the boot mode according to the type of disk on your system. If you want to start an MBR system disk, you can select Legacy support instead of UEFI in boot mode. To start a GPT system disk, you need to select UEFI.

How to access BIOS: Common keys to enter the BIOS are F1, F2, F10, Delete, Esc, as well as key combinations like Ctrl + Alt + Esc or Ctrl + Alt + Delete, which are more common on older machines. You can enter the BIOS interface by holding down any of these keys while booting up on your computer.

Method 4. Add Disk Driver to Repair Windows 10 Boot

When you replace the RAID with a different machine or replace the original SATA or IDE disk with a newer NVMe SSD, you may encounter problems starting up. You can use the following Windows command line to add the driver to the restored Windows image manually.

Dism /Image:X: /Add-Driver /Driver:"y:\z.inf"

Note: X: is the disk character of the restored Windows boot partition, and in double-quotes is the location of the driver. Inf file.

Method 5. Change the SATA Mode for Windows 10 Startup Repair

After the older XP system restores, a blue screen or cycle start may occur, you can change to IDE mode to try to start.

If you run into boot problems after upgrading from an older HDD to a newer SSD, check to see if the BIOS is set to boot for AHCI. If you set it up for RAID mode, make sure the correct RAID driver is added to the cloned system.

To Sum Up

Windows 10 boot repair is a rather complicated problem. There are different solutions for different causes and problems. The above approaches only apply to common UEFI boot issues. If none of them can repair UEFI boot error in Windows 10, you can contact our technical support team to get specialized services for system boot issues.

Do You Need Specialized Data Recovery Services?
You may need further help for tough data loss situations like reformatting drive, RAW disk, partition loss, repartition failures and system boot error. Consult with EaseUS Data Recovery Experts for cost-efficient one-on-one manual recovery service. They could offer the following services after FREE diagnosis:
1. Unformat the drive
2. Repair the RAID, RAW disk or operating system
3. Recover lost partition (the one that cannot be recovered by software)

If you don't want to risk losing or overwriting your important data during the fixes for Windows 10 boot repair, you can recover data from a PC/laptop hard drive that won't boot with EaseUS Data Recovery Wizard, a renowned data recovery tool on the market.

Windows 10 Boot Repair FAQs

The following four questions are highly relevant to UEFI boot repair. Check the answers to get you through.

1. How do you repair Windows 10 if it does not boot?

For Windows 10 UEFI boot repair, you can perform an automatic startup repair or using command prompt to complete. The step-by-step instructions are given each part, check the guides carefully.

2. How do I repair Win10?

To repair Windows 10 boot, you can use the Startup Repair tool. To access Windows 10 recovery environment, turn your computer on and off three times. While booting, ensure you turn off the computer when you see the Windows logo. After the third time, Windows 10 will boot into diagnostics mode. Click "Advanced options" when the recovery screen appears. Then, choose "Startup Repair" and follow the on-screen institutions to do it.

3. How can I repair the Windows 10 UEFI bootloader?

To fix Windows 10 UEFI boot problem:

  • Insert the Media (DVD/USB) in your PC and restart
  • Boot from the media
  • Select Repair Your Computer
  • Select "Troubleshoot" > "Advanced Options"
  • Choose Command Prompt from the menu and use the dispart command lines: Type and run the command: diskpart. Type and run the command: sel disk 0. Type and run the command: list vol

4. How do I fix a boot startup problem?

There are many effective solutions to fix Windows 10 startup issue and repair your EFI Bootloader. You can:

  • Use the Startup Repair tool
  • Use Diskpart in Command Prompt
  • Fix BCD errors
  • Add startup item
  • Change BIOS settings
  • Add disk driver
  • Change SATA mode
  • Fix MBR
  • Restore and repair system partitions
  • more fixes...

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