By Michael / Last Updated September 30, 2021


I just installed the latest version of Windows 10 and my PC fails to boot. What should I do to fix it? Can anybody help me?

- Question from Chris

The cause of Windows 10 not booting

Very often, users on the Internet complain about their Windows 10 computers won’t start as usual. Sometimes, it shows a blue screen or a black screen, or a message of incorrect loading and a boot failure error. What causes this problem? In the following contents, I listed the 2 most common causes.

1.       The OS can refuse to load after the installation of the latest update or antivirus software.

2.       You updated drivers and BIOS or installed new hardware.

Fix boot Windows 10 in 4 ways

It’s literally bothering that your Windows 10 PC doesn’t boot properly because in this case, you can do nothing with your computer anymore. So, this time, I list a few pragmatic methods to help fix boot Windows 10.

Method 1. Use fixboot Windows 10 Command Prompt

The first thing you can do is to try using your Windows 10 installation media to fix it. However, if you don’t have installation media, you have to go to a normal Windows 10 PC and create a fixboot Windows 10 recovery USB drive. Be sure to set up your BIOS to let the machine boot from the USB drive.

1.       After booting into setup, choose “Troubleshoot” > “Advanced options” > “Command Prompt”.

Troubleshooting Command Prompt

2.       Once you’ve Command Prompt up on your screen, you must issue a set of commands to find and solve the issues that prevent your PC from normal boot.

3.       Type “BOOTREC /FIXMBR” and hit “ENTER”. This command will try fixing any issues that result in corruption with the master boot record.

4.       If everything goes well, you’ll see the words “The operation completed successfully”.


5.       Then, type “BOOTREC /FIXBOOT” and press “ENTER”.  This command is going to attempt to write a new boot sector on the disk if Windows detects any damage.

New Boot Sector

6.       If an error, for example, “Boot Manager is missing” appears, then the “BOOTREC /RebuildBcd” command could fix it. By performing this operation, you are also capable of restoring boot entries for older version of Windows as long as you have a dual boot configuration.

Operation Completed

7.       If “BOOTREC / RebuildBcd” doesn’t help, then Microsoft suggests you back your BCD store up and run the BOOTREC/RebuildBcd command again. Follow the steps below to learn how to do it.

  • Input each command then hit “ENTER”.

  • Bcdedit/export C:\BCD_Backup

  • C:

  • cd boot

  • attrib bcd -s -h -r

  • ren c:\boot\bcd bcd.old

  • bootrec /RebuildBcd

Method 2. Uninstall the latest Windows 10 update

Computer won’t start after Windows 10 update? As I mentioned above, sometimes, Windows 10 update may come with bugs and errors which lead to system crash and enable you to boot your computer again. In this case, it appears that the best way to fix it is to uninstall the latest OS update to fixboot Windows 10

1.       Start your PC using Windows 10 installation media. After entering the Windows Setup screen, choose the language, time, and keyboard or input method and hit “Next” to proceed.

2.       Click on “Repair your computer” on the lower left side of the screen.

3.       Then, you’ll be navigated to the advanced startup screen. Now, click on “Troubleshoot”.

4.       On the next screen, you’re allowed to uninstall Windows 10 updates by using either “Uninstall Updates” or “Command Prompt”.

>>If you select “Uninstall Updates”, you’ll be given 2 options: “Uninstall latest quality update” and “Uninstall latest feature update”. Choose one to perform in terms of your own needs.

>>If you choose “Command Prompt”, you’re supposed to uninstall updates manually that were installed to your PC on a particular date by following the steps below.

(1)    Before entering the Command Prompt screen, you must find the drive letter of the drive in which Windows 10 is installed. In my case, Windows 10 is installed on D partition.

(2) Next, run the following command to list every installed update on your computer. Replace the drive letter D with your system drive letter in the command.

dism /Image:D:\ /get-packages /format:list

(3)  Finally, you can uninstall the incorrect update package by using the command below:

dism /Image:D:\ /Remove-Package /PackageName:Package_Identity

Method 3. Rebuild MBR with third-party freeware

If you think method 1 is too complex and are looking for an easier way to fix boot Windows 10, maybe it’s time to rebuild MBR with some third-party app once for all. AOMEI Partition Assistant Standard, as disk manager freeware, is able to manage all your disks and partitions on your PC with ease. Features including GPT-MBR conversion and damaged hard drive fixing are also available. Most importantly, if your system doesn’t successfully boot, you can use it to rebuild MBR to make it normal.

Before you start, download this software first, make a bootable media with your USB drive and then, boot your computer from this media.

Download Freeware Win 1/10/8.1/8/7/XP
Secure Download

Step 1. After seeing the interface of AOMEI Partition Assistant Standard, right-click on the system disk and select “Rebuild MBR”.

Rebuild System Disk Mbr

Step 2. Choose an MBR type for your Windows 10.

Choose Mbr Type

Step 3. After returning to the main interface, hit “Apply" on the upper left corner and hit “Proceed” to start the rebuilding process.


Just wait a few seconds before it’s finished.

Method 4. Reset the PC

The last thing you should try when Windows 10 won’t boot is to reinstall your Windows 10 by resetting your PC

1.       Start your PC and then, when you see the startup logo, hold down the power button until the screen becomes black.

Windows Logo Min

2.       Hit the power button once more to start the PC after waiting several seconds.

3.       When the startup logo appears on the screen, hold down the power button again until it goes black.

4.       Wait seconds, and then, hit the power button again to start the PC.

5.       This time, allow the PC to fully boot and this screen should appear.

Preparing Automatic Repair Min

6.       Once WinRE environment starts, select “Advanced options”.

Automatic Repair Min

7.       Now, you’ll go into WinRE. Select “Troubleshoot”.

Choose An Option Min

8.       Here, you’re going to troubleshoot the problem. Click on “Reset this PC” to get Windows 10 restored.

Troubleshoot Min

9.       You’re able to choose to keep your data or remove everything.

Reset This Pc Min

10.    Click on “Keep my files” to remove apps and settings but keeps your personal files. If you have backed up your files and hope to start from scratch, click on “Remove everything”.


What’s the best way to fixboot Windows 10? In the tutorial, I introduced Startup Repair, Command Prompt, update uninstallation, and third-party freeware to fix it when your PC won’t boot again. Hopefully, with the help of these methods, you can find your way out. And as for method 4, AOMEI Partition Assistant Standard, if you want to try more features like allocating free space from one partition to another, migrating OS from MBR to GPT, and MBR and GPT conversion, you must upgrade it to its pro version.