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Fix UEFI Boot in Windows 10/8/7

Updated on Sep 28, 2018 by Tracy King to Partition Manager

Summary:
This article provides effective method and detail guide for you to fix computer UEFI boot for Windows 10/8/7 with ease. If you are having problems with UEFI bootloader and fail to boot your Windows 10/8/7 system, follow to find solution and fix this problem with ease now.

In this article, you'll find step-by-step methods to guide you fix computer UEFI boot errors in Windows 10/8/7. No matter you are a new Windows 10 insider user or a loyal Windows 8 or 7 fans, if you are having problems with UEFI boot on your PC, just relax. And you may directly follow offered steps below to fix UEFI boot in Windows 10/8/7 with ease now.


Method 1. Use Diskpart to Fix UEFI Boot Error in Windows 10/8/7

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:

Step 1. Enter Command Prompt from Advanced options

  1. 1. Insert Windows 10/8/7 installation disk or installation USB into PC > Boot from the disk or USB.
  2. 2. Click Repair your computer or hit F8 at the Install now screen.
  3. 3. Click Troubleshoot > Advanced options > Command Prompt.

Open Command Prompt to fix UEFI boot error.

Step 2. Run Diskpart to set partition ID and assign drive letter

  1. 1. Type below command and hit Enter each time:
  • diskpart
  • list disk
  • sel disk 0

Run Disk Part to start fixing UEFI error.

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.

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.

4. Assign 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.

Step 3. Repair the Boot Record

  1. 1. Type each of below command and hit Enter each time:
  • cd /d G:\EFI\Microsoft\Boot\
  1. 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.

  1. 2. Repair the Boot Record with below command line and hit Enter:
  • bootrec /fixboot

Fix boot record command.

Step 4. Rebuild the BDC Store

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

  • ren BCD BCD.old
  • bcdboot C:\Windows /l 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.

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 2. Use Automatic Repair to repair Windows 10/8/7 UEFI

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:

Step 1. Boot up Windows from Installation media

  1. 1. Insert Windows 10/8/7 installation disk or USB to your PC.
  2. 2. Restart PC and boot from the disk or USB.

Step 2. Enable Automatic Repair option

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

Enable Automatic repair option to fix UEFI error.

2. Click Troubleshoot at Choose an option screen > Click Automatic Repair.

Use Automatic Repair option to fix UEFI boot error.

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.


Final Word

UEFI boot error frequently occurs to Windows 10, 8 and some Windows 7 users. If you have come across such a problem, relax and follow the provided two methods on this page to get rid of this issue.