Hi,
Thanks for your post in Microsoft Community.
I understand that you have encountered a problem with dual-system Windows 11 boot errors.
This error code indicates that your startup configuration is corrupted.
If you want to clean out the Windows installation on the D drive, you can do two things.
1- Clean up the files.
If Windows 10 and Windows 11 are using two different hard disks, and there are no files in the hard disk where Windows 11 is located, then you can right-click "This PC" - click Manage - Disk Management - Delete the EFI partition of the disk where Windows 11 is located and the recovery partition as well as the base partition - then recreate the new partition.
If the hard disk is the same, or important files are stored in the same disk, you can open the D driver in the file explorer and delete the Windows files.
2- Remove the boot entry
Press Win+R, enter and run msconfig.
In the "Startup" tab, delete the Windows 11 boot selection.
Then install Windows 11 again if needed.
Please feel free to let me know how it goes.
Kirk | Microsoft Community Support Specialist
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