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Fix UEFI Boot in Windows 10/8/7

2016-11-16 16:44:00 Posted 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 in your PC, just relax and you may directly follow below offered methods to fix UEFI boot in Windows 10/8/7 with ease now.

Method 1. Use bootrec/bootsect to fix UEFI in Windows 7
       1.1 Use bootrec to fix Windows 7 UEFI
       1.2 Use bootsect to fix Windows 7 UEFI
Method 2. Use diskpart/Automatic Repair to fix UEFI in Windows 10/8
       2.1 Use diskpart to repair Windows 10/8 UEFI
       2.2 Use Automatic Repair to repair Windows 10/8 UEFI
Method 3. Use bootable disk and reinstall system to fix UEFI boot in Windows 10/8/7

Note: If you prefer simple and all in one solution to fix UEFI problems in Windows 10/8/7, 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, you may follow Method 2 or 3 to find relative solutions that suite you the most to fix UEFI in Window 10/8/7 then.

Method 1. Use bootrec/bootsect to fix UEFI in Windows 7

If you are a Windows 7 fans, having UEFI boot problems, and prefer free method to fix UEFI boot error. You may follow below 2 methods to solve this issue now. 

Before you start fix UEFI bootloader in Windows 7, please make sure that UEFI load with legacy mode is active:

Restart PC > Open UEFI > Search Secure Boot and disable or turn it Off > Save settings.

1.1 Use bootrec to fix Windows 7 UEFI

  • Insert Windows 7 installation CD/DVD and boot from it;
  • Select language, keyboard and click Next;
  • Select operating list (Windows 7) and click Next;
  • Click Command Prompt at System Recovery Options screen;
  • Type the below command and hit Enter each time:

bootrec /fixmbr
bootrec /fixboot
bootrec /ScanOs
bootrec /rebuildBcd

  • Remove the installation CD/DVD, type: exit and hit Enter > Restart your computer.

1.2 USe bootsect to fix Windows 7 UEFI

  • Insert Windows 7 installation CD/DVD and boot from it;
  • Select language, keyboard and click Next;
  • Select operating list (Windows 7) and click Next;
  • Click Command Prompt at System Recovery Options screen;
  • Type: bootsect /nt60 SYS /mbr and hit Enter;
  • Remove Windows 7 installtion CD/DVD, type: exit and hit Enter > Restart PC.

Method 2. Use diskpart/Automatic Repair to fix UEFI in Windows 10/8

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:

2.1 Use diskpart to repair Windows 10/8 UEFI

  • Insert Windows 10/8.1/8 installation disk or installation USB into PC > Boot from the disk or USB;
  • Click Repair your computer or hit F8 at the Install now screen;
  • Click Troubleshoot > Advanced options > Command Prompt
  • Type below command and hit Enter each time:

diskpart
DISKPART>
sel disk 0

When the message "Disk 0 is now the selected disk" shows up, type:
list vol

  • 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.
  • Type below command and hit Enter each time: 

sel vol 2
assign letter=G: Note: G shall be a unique drive letter which cannot be already used;

  • When the message "DiskPart successfully assigned the drive letter or mount point", type below command and hit Enter each time:

exit
cd /d G:\EFI\Microsoft\Boot\
cd /d G:\Boot\ or cd /d G:\ESD\Windows\EFI\Microsoft\Boot\
Note: G is the drive letter you signed to UEFI partition and remember to replace G with UEFI’s partition letter.
bootrec /fixboot
ren BCD BCD.bak
bcdboot C:\Windows /l en-us /s x: /f ALL Note: c:\ is the drive where Windows 10/8.1/8 is installed on.

You can also run: bootrec /rebuildbcd > hit Enter;

  • Type: exit in Command Prompt > Restart PC.

Now UEFI boot is fixed and Windows 10/8.1/8 can be boot again.

2.2 Use Automatic Repair to repair Windows 10/8 UEFI

  • Insert Windows 10/8.1/8 installation disk or USB with PC > Restart PC and boot from the disk or USB;
  • Click Repair your computer at the Install now screen;
  • Click Troubleshoot at Choose an option screen > Click Automatic Repair;
  • Choose an account from the list to continue at the Automatic Repair screen;
  • Wait for the process to finish.

Method 3. Use bootable disk to fix system error and reinstall system to solve UEFI boot issue in Windows 10/8/7

When problems happen to UEFI boot, Windows will not be able to load or boot anymore. Here we’d like to recommend you a powerful partition manager software which supports you to create a bootable disk to repair system error on boot disk. 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 UEFI now:

Now you can follow below detail steps to create and use bootable disk to fix UEFI in Windows 10/8/7 error with two steps now:

Step 1. Fix system/internal errors on UEFI boot disk from WinPE bootable CD by EaseUS Partition Master

  1. 1. Download and launch EaseUS Partition Master in a new PC which runs exact the same system and UEFI as yours.
  2. Click Tool and choose "Create WinPE bootable disk". 

Create bootable disk to fix UEFI boot error.

2.Then you can choose to create the bootable disk on USB, CD/DVD or Export Windows 10 ISO. 
An external storage device such as USB is recommended.

Fix UEFI boot in Windows 10/8/7 with bootable disk.

3. Click "Proceed" to finish all process.
4. When the process is finished, connect the USB drive to your corrupted computer and reboot the PC;
5. Select to boot from EaseUS WinPE bootable disk and let this program to repair internal Windows system error with Check partition mode on UEFI boot disk in your PC.

After this, you can try to reboot Windows system from UEFI mode, if it still doesn't work. Go to step 2 and fix UEFI boot error in Windows 10/8/7.

Step 2. Reinstall Windows 10/8/7 on your PC to fix UEFI boot error

If the above tips don't work, you can try the last shot. It is to reinstall Windows 10/8/7 to fix the UEFI boot error. 

  1. 1. Create an installation media of a health computer which runs with UEFI and the same Windows system of your PC;
  2. 2. Reinstall Windows 10/8/7 with Windows installation media; (If you don't know how to create Windows installation media, download a creation tool from Microsoft now.)

After this, you can set the computer to boot from UEFI again and you'll get a healthy computer back.

Note: If you lost some important files or data in the system partition after fixing UEFI 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.