When you are going to work with your desktop computer in the office or with your home computer, the first thing to do is to turn it on and all the associated peripherals. Normally the next thing to do is wait for the computer to carry out all the previous processes so that it can load the operating system and start using it. However, it is possible that once your PC has failed to boot with Windows 10 and gives you an error, do you want to know how to repair Boot Loader BCD startup ? Keep reading to do it yourself.
Windows 10 Won’t Start – How to Repair Boot Loader BCD Boot Loader
One of the errors that may appear at startup is related to the Boot Loader BCD. BCD stands for Boot Configuration Data in English (boot configuration data) and its function is to store all the information about the boot or startup of the operating system and which ones it has installed.
Why won’t Windows 10 boot or boot Loader is corrupted?
There are various reasons why Windows 10 will not boot or why the BCD may get damaged or corrupted, which can be the following:
- The equipment has not been shut down properly, perhaps due to a power failure .
- There has been a force restart of the system due to some unknown error, therefore the profile cannot be loaded (such as the famous blue screen).
- Some important data stored on the hard drive has been corrupted .
- The hard drives are failing or some of its sectors are defective, or damage to other components.
- Malicious software has infected the machine, such as malware, viruses, Trojans, etc.
- RAM very saturated, which you will have to free and optimize said memory.
If it is a hardware problem, the damaged component may need to be replaced. But if the failure is due to a software problem , you can try to fix it yourself and we will explain it to you below.
Steps to repair Boot Loader startup in Windows 10
To carry out this process we can use the diagnostic or repair tools provided by the operating system itself and for this you must have a Windows 10 installation disk, either on a physical disk or create a bootable USB pendrive . We will explain two methods, step by step manual repair with commands or automatic repair .
Before explaining the methods, it should be noted that it is required to start the system from the installation disk or pendrive, so first you will have to go to the BIOS boot menu , to be able to select that option.
To do this, restart the computer, enter the boot menu by pressing the corresponding key (varies depending on the model: F8, F10, F12 or ESC). Then select the boot device.
Method 1: Repair by using commands.
Once you start the system with the Windows 10 boot disk with a USB stick or the disk, you will need to repair the system BCD . To do this, follow the following steps:
- Select Repair your computer. Then select the Troubleshoot option and then select Advanced options. Then select Command Prompt.
- Once the box is open, enter the command diskpart, sel disk 0, list vol. (pressing the enter key after each command). Thus, the main disk has been selected and the volumes that make it up have been listed.
- Then select the volume that contains the Windows boot, which generally weighs 500 MB and is No. 2. To do this, write the command sel vol. 2, assign letter = G : (hit enter every time)
- When Diskpart assigns the drive letter, type the exit commands, cd / d G: \ EFI \ Microsoft \ Boot \,
cd / d G: \ Boot \ or cd / d G: \ ESD \ Windows \ EFI \ Microsoft \ Boot \, bootrec / fixboot, ren BCD BCD.bak
bcdboot C: \ Windows / l en-us / sx: / f ALL. (hit enter every time)
Type: exit and then restart the PC.
Method 2: Repair through the system automatically.
Once you start the system with the Windows 10 boot disk with a USB stick or the disk, you will need to repair the system BCD . To do this, follow the following very simple steps:
- Select Repair your computer. Then select the Troubleshoot option and then select Automatic Repair.
- Wait for the process to finish.
This method is the easiest because you avoid entering commands in which you can make mistakes.
If the above methods don’t work, try starting Windows 10 in safe mode or reinstalling the system. Now you know how to repair Boot Loader startup when Windows 10 won’t boot.