Windows 10: How to fix "operating system boot mode change 021"

Hi, the HP laptop suddenly shows the message "Operating System Boot Mode Change 021" with the option Code + Enter to complete or ESC to continue without changing. I have not initiated any change, so I always press ESC. After that, Windows 10 runs normally. However, the next time I restart the laptop, the same message comes up. What do I have to do so that the message no longer comes and no change is made? I think I need to set something in the BIOS, but I'm not sure what.

:)

 

error loading operating system.

Hi Ibrahim,

Thank you for posting your query on Microsoft Community.

I suggest you to check if you are able to boot the computer into Safe Mode environment.

To use a Safe Boot option, follow these steps:

• 
  Restart your computer and start pressing the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, you can press the F8 key when the Boot Menu appears.
  
• 
  Select an option to “Safe mode with networking” using the arrow keys on the keyboard when the Windows Advanced Options menu
  appears, and then press ENTER.
  

Also, try updating your BIOS drivers and check.

Hope it helps. Do let us know if your issue is resolved. For any further query, feel free to contact us.

Thank you.

 

Unable to make a “Operating system boot mode change”

Hi,



Thank you for writing to Microsoft Community Forums.



I understand that you are facing issues while booting the PC. For further clarity on the issue, please respond to the questions below.

1. Are you trying to re-install Windows on the PC?
   
2. Have you made the changes to boot the PC using a USB?
   
3. Did you create an installation media to install Windows?
   
4. When you say, “the PC is broken”, are you unable to boot to the desktop?
   

If you are trying to re-install Windows on the PC then please refer the article

How to Clean Install Windows 10 on a PC Step-by-Step Guide



Note: Reinstalling Windows will remove all the applications installed on the PC, also it is advised to take a backup of data before re-installing Wnidows.



However, if you are trying to change the boot order to boot the PC using another hard drive then you can refer the article

HP PCs - Configuring the Boot Order in the System BIOS



In addition, if you are facing issues while booting the PC you can refer the article

HP PCs - Error Messages Display on a Black Screen during Startup or Boot (Windows 10, 8, 7)



Note: Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems
resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.



Regards,

Prakhar Khare

Microsoft Community – Moderator

 

' choose an operation system to start"

Hi Bob,

To better assist you, do let us the complete message that you receive.

Sometimes, this could be due to two operating system installed in your computer. Just to make sure this is not the case, I suggest you to try the steps below:

1. Press Windows key + R.

2. Type msconfig and press enter.

3. Click the "boot" tab and check if there are any other operating system listed.

4. In addition, change the timeout time to 3 seconds(default)

Let us know the result, we will be glad to help if you need further assistance.