Resolve “Windows could not prepare the computer to boot into the next phase of installation”

Issue

Windows Setup can copy and apply the Windows image but fail when it must hand control from installation media to the newly installed Windows boot files. Two closely related visible messages are:

Windows could not prepare the computer to boot into the next phase of installation. To install Windows, restart the installation.

and:

Windows could not update the computer's boot configuration. Installation cannot proceed.

The first evidence branch completed after the installer USB stopped taking precedence at the first-restart handoff. The second completed after BCDBoot added the new Windows installation to a verified existing boot configuration. These are separate branches. Removing USB does not repair a damaged BCD, and BCDBoot is unnecessary when the only defect is booting the installer again.

Searchable Windows error codes and exact messages

Displayed identifier	Windows name or exact message	When it can apply
No numeric code	Windows could not prepare the computer to boot into the next phase of installation. To install Windows, restart the installation.	Primary Setup handoff message. Determine whether media handoff or boot-file creation failed.
No numeric code	Windows could not update the computer's boot configuration. Installation cannot proceed.	Setup could not create or update boot configuration. Preserve Setup logs and readable BCD before BCDBoot.
`0xc0000034`	The Boot Configuration Data file is missing some required information.	A follow-on BCD failure can appear when the target boot store lacks required objects. It is not the original Setup message.
`0xc000000f`	The Boot Configuration Data for your PC is missing or contains errors or A required device isn't connected or can't be accessed	Wording varies with the file and boot stage. Preserve the displayed `File:` path, especially `\BCD` or `\EFI\Microsoft\Boot\BCD`.
`0xc0000098`	The Boot Configuration Data file doesn't contain valid information for an operating system	Can also name a specific driver/file. Apply the BCD interpretation only when `File:` identifies the BCD store.
`0xc000000e`	A required device isn't connected or can't be accessed	A boot entry exists but its device cannot be resolved. Confirm the target volume and entry rather than repeating installation.
No numeric code	Boot files successfully created.	Expected BCDBoot result. It proves the command completed, not that the correct installation/store was selected.
No numeric code	Failure when attempting to copy boot files.	BCDBoot could not provision the chosen target. Stop and inspect source, system partition, free space, file system, and logs.

Applies when

Use this procedure when:

Windows 10/11 Setup has copied or applied files to the correct target installation;
the target Windows directory is readable and contains a registry hive and loader files;
Setup displays one of the two exact handoff/boot-configuration messages;
the system disk and installation target are consistently detected;
BitLocker is unlocked; and
evidence can distinguish installer-media precedence from a missing/new BCD entry.

Branch A applies to a normal installation launched by booting Microsoft USB media. Branch B applies when an existing Windows installation still starts and a second/new Windows directory needs a boot entry. Branch C applies only when boot files on a proved system partition must be provisioned from Setup/WinRE.

Does not apply when

Do not use this article when the target drive disappears, is RAW, reports I/O errors, lacks a complete applied Windows directory, or contains data that has not been protected before reinstalling.

It does not apply to an unsupported Windows edition/architecture, a driver-required storage controller that prevents Setup from seeing the disk, a full or missing EFI/System Reserved partition, a changed controller mode, or a firmware boot entry that was independently proved missing. Route those mechanisms to their dedicated procedures.

Do not use the BCD branches on a multiboot system whose non-Windows boot manager intentionally owns startup unless its configuration and rollback are understood.

Information that may remain unknown

The reason firmware or Setup repeatedly selected the USB and the exact internal Setup function that failed may remain unknown if the handoff is corrected and installation completes.

The following may not remain unknown:

the correct target Windows volume and physical disk;
whether the target disk is GPT or MBR when an explicit system-partition branch is used;
the system/EFI partition paired with the target installation;
whether a readable BCD store exists and where;
whether another Windows installation remains the intended default;
whether the failure occurred before or after the first automatic restart; and
which media and disk the firmware actually starts after restart.

The exact Windows build is not needed for a BCDBoot operation using the target installation's own files. It is required when restarting Setup with replacement media for a particular release.

Requirements

Current Microsoft Windows 10/11 installation media
Stable AC power
Verified backup of important data
Correct target installation already identified
Administrative Command Prompt from the working Windows installation, Setup (Shift+F10), or WinRE
Photographs/copies of list disk, list volume, and list partition
Copies/export of every readable BCD store before BCDBoot
Unrelated external storage removed
Other internal bootable disks disconnected when physically safe, or unambiguously identified when they cannot be disconnected
An unused temporary letter for the target Windows volume (N: below)
An unused temporary letter for a separate system partition (S: below)

Do not create, delete, format, convert, or resize partitions under this article.

Starting position

If the error is still displayed in Windows Setup, leave the computer powered and press Shift+F10 to open Command Prompt. If that shortcut is unavailable, restart to the installation media and choose Repair your computer > Troubleshoot > Command Prompt.

If an older Windows installation still starts, use its elevated Command Prompt for Branch B. Do not boot from USB for that branch.

This procedure uses N: for the new/target Windows installation and S: for a separate system partition. Confirm both are unused before assignment. Drive letters seen during Setup/WinRE can differ from letters in the working Windows installation.

Confirm the diagnosis

Photograph the complete Setup message and note the stage: Copying Windows files, Getting files ready for installation, Installing features, Installing updates, Finishing up, first restart, or a follow-on Recovery screen.
Record every connected disk and volume:
```
diskpart
list disk
list volume
```
Select the already-identified target Windows volume, confirm N: is unused, and assign it if necessary:
```
select volume <target-Windows-volume-number>
detail volume
assign letter=N
detail volume
exit
```
Verify that Setup applied a plausible Windows image:
```
dir N:\Windows\System32\Config\SYSTEM
dir N:\Windows\System32\winload.efi
dir N:\Windows\System32\winload.exe
```
The appropriate loader depends on the actual boot path. Stop if the registry hive and Windows directory are absent or the volume is the wrong installation.
Before copying evidence or making any boot-file write, create one unused, guarded attempt directory. Put it outside the EFI or Boot tree that BCDBoot could change. The evidence volume can be N: when that volume is readable and is not the installer media; use a different proved writable volume when N: is unsuitable. Replace the example volume and token before running the commands. The token must be unique for this attempt; do not use FIX-068 alone and do not reuse a prior directory.
```
set "FIX68_EVID=N:"
set "FIX68_TOKEN=FIX-068-20260901T142233Z-A01"
set "FIX68_ATTEMPT=%FIX68_EVID%\SetupEvidence\%FIX68_TOKEN%"
if exist "%FIX68_ATTEMPT%" (echo STOP: attempt directory already exists & exit /b 1)
md "%FIX68_ATTEMPT%"
if not exist "%FIX68_ATTEMPT%\." (echo STOP: attempt directory was not created & exit /b 1)
> "%FIX68_ATTEMPT%\attempt-path.txt" echo %FIX68_ATTEMPT%
findstr /x /c:"%FIX68_ATTEMPT%" "%FIX68_ATTEMPT%\attempt-path.txt" >nul
if errorlevel 1 (echo STOP: attempt-path marker does not match & exit /b 1)
type "%FIX68_ATTEMPT%\attempt-path.txt"
```
Photograph or otherwise record the exact displayed path outside the computer. Keep this Command Prompt open so %FIX68_ATTEMPT% continues to identify the same attempt. If the shell is closed, re-enter the exact recorded path and validate attempt-path.txt; never select a directory by “latest” timestamp.

Preserve Setup logs when present:

robocopy N:\$WINDOWS.~BT\Sources\Panther "%FIX68_ATTEMPT%\Panther" /E /COPY:DAT /R:1 /W:1
robocopy N:\Windows\Panther "%FIX68_ATTEMPT%\Windows-Panther" /E /COPY:DAT /R:1 /W:1

Depending on phase, logs can instead be on the Setup RAM drive or another temporary path. Record missing paths. Do not fabricate a copy result.

Open the preserved setupact.log and setuperr.log in Notepad. Search upward from the end for BCD, BCDBoot, boot configuration, IBSLIB, failure, and the timestamp of the visible message.
Detect the target disk's partition layout only because the explicit boot-file branch differs:
```
diskpart
list disk
select disk <target-disk-number>
detail disk
list partition
list volume
```
- GPT target: identify the FAT32 EFI System Partition associated with that disk.
- Basic MBR target: identify the NTFS System Reserved partition or the Windows partition that legitimately holds BIOS boot files and, when separate, the Active flag.
Do not change firmware mode. DiskPart and partition contents provide the needed layout evidence.

If a separate system partition exists, assign unused S: temporarily and inspect it:

select volume <system-volume-number>
detail volume
assign letter=S
detail volume
exit

GPT/UEFI-style contents:

dir /a S:\EFI\Microsoft\Boot
dir /a S:\EFI\Microsoft\Boot\BCD

BIOS/MBR-style contents:

dir /a S:\Boot
dir /a S:\Boot\BCD
dir /a S:\bootmgr

Check free space and file-system readability without repairs:

chkdsk N:
chkdsk S:

Omit S: if no separate system partition was assigned. Stop on RAW media, I/O errors, or unexplained unreadable metadata. If the system partition is full, use the dedicated capacity procedure rather than deleting files here.

Before any BCDBoot command, capture the entire readable boot tree that BCDBoot can change, not just the BCD file. This step is not required for Branch A, which performs no boot-file write. Set %FIX68_SYS% to the already-proved system volume (S: when separate; the proved Windows/system volume when combined). Do not proceed if this value is inferred only from partition size.

set "FIX68_SYS=S:"
if not exist "%FIX68_SYS%\" (echo STOP: proved system volume is not mounted & exit /b 1)
if exist "%FIX68_ATTEMPT%\boot-tree-before" (echo STOP: before-state directory already exists & exit /b 1)
md "%FIX68_ATTEMPT%\boot-tree-before"

For a GPT target with a proved FAT32 EFI System Partition, capture all of \EFI, including other vendors' directories, and verify that the copy has no differences:

if not exist "%FIX68_SYS%\EFI\." (echo STOP: EFI tree is missing or unreadable & exit /b 1)
robocopy "%FIX68_SYS%\EFI" "%FIX68_ATTEMPT%\boot-tree-before\EFI" /E /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /FFT /LOG:"%FIX68_ATTEMPT%\boot-tree-copy.log"
if errorlevel 8 (echo STOP: EFI tree capture failed & exit /b 1)
robocopy "%FIX68_SYS%\EFI" "%FIX68_ATTEMPT%\boot-tree-before\EFI" /MIR /L /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /FFT /LOG:"%FIX68_ATTEMPT%\boot-tree-compare.log"
if errorlevel 1 (echo STOP: EFI tree capture is not an exact readable copy & exit /b 1)
copy /b "%FIX68_SYS%\EFI\Microsoft\Boot\BCD" "%FIX68_ATTEMPT%\BCD-before"
if errorlevel 1 (echo STOP: readable BCD was not captured & exit /b 1)
bcdedit /store "%FIX68_SYS%\EFI\Microsoft\Boot\BCD" /enum all /v > "%FIX68_ATTEMPT%\BCD-before.txt"
if errorlevel 1 (echo STOP: BCD enumeration failed & exit /b 1)
if exist "%FIX68_ATTEMPT%\write-gate.txt" (echo STOP: write gate already exists & exit /b 1)
> "%FIX68_ATTEMPT%\write-gate.txt" echo CAPTURED_BOOT_TREE

For a basic MBR target with a proved BIOS system partition, capture all of \Boot plus the root bootmgr file, and verify both:

if not exist "%FIX68_SYS%\Boot\." (echo STOP: BIOS Boot tree is missing or unreadable & exit /b 1)
if not exist "%FIX68_SYS%\bootmgr" (echo STOP: root bootmgr is missing or unreadable & exit /b 1)
robocopy "%FIX68_SYS%\Boot" "%FIX68_ATTEMPT%\boot-tree-before\Boot" /E /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /LOG:"%FIX68_ATTEMPT%\boot-tree-copy.log"
if errorlevel 8 (echo STOP: BIOS Boot tree capture failed & exit /b 1)
robocopy "%FIX68_SYS%\Boot" "%FIX68_ATTEMPT%\boot-tree-before\Boot" /MIR /L /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /LOG:"%FIX68_ATTEMPT%\boot-tree-compare.log"
if errorlevel 1 (echo STOP: BIOS Boot tree capture is not an exact readable copy & exit /b 1)
copy /b "%FIX68_SYS%\bootmgr" "%FIX68_ATTEMPT%\boot-tree-before\bootmgr"
if errorlevel 1 (echo STOP: bootmgr capture failed & exit /b 1)
fc /b "%FIX68_SYS%\bootmgr" "%FIX68_ATTEMPT%\boot-tree-before\bootmgr" > "%FIX68_ATTEMPT%\bootmgr-compare.txt"
if errorlevel 1 (echo STOP: bootmgr copy does not match & exit /b 1)
copy /b "%FIX68_SYS%\Boot\BCD" "%FIX68_ATTEMPT%\BCD-before"
if errorlevel 1 (echo STOP: readable BCD was not captured & exit /b 1)
bcdedit /store "%FIX68_SYS%\Boot\BCD" /enum all /v > "%FIX68_ATTEMPT%\BCD-before.txt"
if errorlevel 1 (echo STOP: BCD enumeration failed & exit /b 1)
if exist "%FIX68_ATTEMPT%\write-gate.txt" (echo STOP: write gate already exists & exit /b 1)
> "%FIX68_ATTEMPT%\write-gate.txt" echo CAPTURED_BOOT_TREE

A missing tree, unreadable file, Robocopy return code 8 or higher, nonzero dry-run comparison, failed copy, or failed fc means the file-level gate did not pass. Do not create CAPTURED_BOOT_TREE manually. The only alternate write gate is a current, verified-restorable system image that covers the complete system/EFI partition and the target Windows volume. Require independent recovery media, a successful image verification result, sufficient storage, and the exact image ID/location recorded under this attempt. Copy the verifier's report into %FIX68_ATTEMPT%, then—and only then—record:

if exist "%FIX68_ATTEMPT%\write-gate.txt" (echo STOP: write gate already exists & exit /b 1)
> "%FIX68_ATTEMPT%\write-gate.txt" echo VERIFIED_SYSTEM_IMAGE

Validate the exact gate immediately before BCDBoot:

findstr /x /c:"CAPTURED_BOOT_TREE" /c:"VERIFIED_SYSTEM_IMAGE" "%FIX68_ATTEMPT%\write-gate.txt" >nul
if errorlevel 1 (echo STOP: no valid pre-write rollback gate & exit /b 1)

Identify the branch:

Media-handoff branch: Setup completed file-copy/getting-ready stages, the target boot configuration is otherwise plausible, and reboot returns to USB/Setup or succeeds when the USB is absent.
Working-Windows BCD branch: another Windows installation starts, the new N:\Windows is complete, and its loader entry is missing from the current BCD.
Explicit boot-file branch: logs show BCDBoot/BCD creation failure and the exact target Windows and system partitions are proved.

Do not combine branches in one attempt.

Resolution steps

Branch A — Correct the installation-media handoff

Use this branch when the USB is being selected again or preventing the first boot of the applied target image.

If Setup has already stopped with the error, preserve logs and data, then restart the installation from verified Microsoft media. Select the same intended target without deleting, formatting, or cleaning partitions under this article.
Let Copying Windows files and Getting files ready for installation complete. Do not remove USB while Setup is still reading installation files.
When Setup announces the first automatic restart or the screen goes dark for that restart, remove the installer USB. Do not remove power or the system disk.
If the computer offers a one-time boot menu, select Windows Boot Manager on the target disk, not the USB installer. Do not change firmware mode.
Allow Setup to continue through its offline phases and OOBE. Do not press a key to boot from USB if that prompt appears.
If Setup instead returns the same boot-configuration message before initiating a restart, the problem is not merely media precedence. Preserve the new logs and use only the matching BCD branch.

Branch B — Add the new Windows installation from a working Windows session

Use this branch only when an existing Windows installation on the same computer starts normally and is intended to retain control of the shared boot menu.

Start the working Windows installation and open Command Prompt as administrator.
Reidentify the new Windows volume in this environment. Its letter may no longer be N:. Assign N: only if unused and needed.
Verify N:\Windows\System32\Config\SYSTEM again.

Revalidate the exact unique attempt created in section 7 and its pre-write gate. If this is a new Command Prompt, type the exact attempt path from the external record; do not guess it or choose a directory by date.

if not defined FIX68_ATTEMPT set /p "FIX68_ATTEMPT=Enter the exact recorded FIX-068 attempt path: "
if not exist "%FIX68_ATTEMPT%\attempt-path.txt" (echo STOP: recorded attempt marker is missing & exit /b 1)
findstr /x /c:"%FIX68_ATTEMPT%" "%FIX68_ATTEMPT%\attempt-path.txt" >nul
if errorlevel 1 (echo STOP: this is not the recorded attempt & exit /b 1)
findstr /x /c:"CAPTURED_BOOT_TREE" /c:"VERIFIED_SYSTEM_IMAGE" "%FIX68_ATTEMPT%\write-gate.txt" >nul
if errorlevel 1 (echo STOP: no valid pre-write rollback gate & exit /b 1)

Export the active system BCD and enumeration into that attempt. Open msinfo32 and record BIOS Mode as either UEFI or Legacy; this value is detected rather than requested from memory. On UEFI, also capture the firmware entries and order:
```
bcdedit /export "%FIX68_ATTEMPT%\BCD-system-before"
bcdedit /enum all /v > "%FIX68_ATTEMPT%\BCD-system-before.txt"
bcdedit /enum firmware /v > "%FIX68_ATTEMPT%\firmware-order-before.txt" 2>&1
```
On Legacy/BIOS, bcdedit /enum firmware can report that the store type is not supported; record that result and do not use the UEFI-only /p switch below.
Immediately before BCDBoot, repeat the attempt-marker and write-gate checks from step 4. Add/repair the boot entry for the new Windows installation while preserving the existing default entry. Use exactly one detected-firmware branch:

UEFI:
```
bcdboot N:\Windows /d /p /v
```
/d preserves the existing default Windows loader and /p preserves the position of an existing Windows Boot Manager firmware entry. If no such firmware entry existed, BCDBoot may create one; that change must be visible in the before/after firmware enumeration.

Legacy/BIOS:
```
bcdboot N:\Windows /d /v
```
Do not apply /p on Legacy/BIOS. BCDBoot still detects the running system partition; no explicit /f or guessed system-volume letter is used in this working-Windows branch.
Require Boot files successfully created. If BCDBoot reports failure, stop and use section 11 rollback; do not run it for every Windows directory.

Enumerate the BCD again into the same recorded attempt:

bcdedit /enum all /v > "%FIX68_ATTEMPT%\BCD-system-after.txt"
bcdedit /enum firmware /v > "%FIX68_ATTEMPT%\firmware-order-after.txt" 2>&1

Compare before and after. Require one new Windows loader whose device, osdevice, path, and systemroot resolve to the new installation. On UEFI, also require that the pre-existing firmware displayorder remains in the captured order, except for a clearly identified newly created Windows Boot Manager entry when none existed. Do not delete, rename, or reorder other entries yet.
Restart. At Windows Boot Manager, select the new Windows entry once so Setup can continue.
If the new entry returns a BCD code, preserve its complete File: and code. Do not rerun BCDBoot blindly.

Branch C — Provision boot files to a proved system partition from Setup/WinRE

Use this branch only when no working Windows can perform Branch B, logs show boot-file creation failure, the correct N: and S: are unambiguous, the system partition is writable and has space, and either the complete readable boot tree passed the capture gate or the verified-system-image gate passed.

Reconfirm the disk/partition layout immediately before the write. Revalidate the exact attempt marker and write gate; do not proceed on the strength of a BCD-only export:

if not defined FIX68_ATTEMPT set /p "FIX68_ATTEMPT=Enter the exact recorded FIX-068 attempt path: "
if not exist "%FIX68_ATTEMPT%\attempt-path.txt" (echo STOP: recorded attempt marker is missing & exit /b 1)
findstr /x /c:"%FIX68_ATTEMPT%" "%FIX68_ATTEMPT%\attempt-path.txt" >nul
if errorlevel 1 (echo STOP: this is not the recorded attempt & exit /b 1)
findstr /x /c:"CAPTURED_BOOT_TREE" /c:"VERIFIED_SYSTEM_IMAGE" "%FIX68_ATTEMPT%\write-gate.txt" >nul
if errorlevel 1 (echo STOP: no valid pre-write rollback gate & exit /b 1)

GPT disk with verified FAT32 EFI System Partition:
```
bcdboot N:\Windows /s S: /f UEFI /v
```
Basic MBR disk with verified active NTFS system partition:
```
bcdboot N:\Windows /s S: /f BIOS /v
```
If the Windows partition itself is the proved BIOS system partition, replace S: with N:.
Require Boot files successfully created. If it fails, stop.
Important UEFI boundary: using /s copies boot files to the specified ESP but does not create a new firmware NVRAM entry. This branch assumes a usable Windows Boot Manager firmware entry already points to that target ESP. If that entry is absent, use the dedicated missing-UEFI-entry procedure rather than inventing firmware commands here.
Enumerate the written store with bcdedit /store ... /enum all /v and confirm the new loader resolves to N:\Windows.
Remove temporary letters assigned by this article, restart without USB, and choose the existing Windows Boot Manager for the target disk.

Expected results and branches

If removing USB only at the first restart lets Setup continue, the repaired mechanism is media/boot-target handoff.
If BCDBoot from a working Windows session adds a valid entry and selecting it resumes Setup, the repaired mechanism is a missing/incomplete boot-menu entry for the new installation.
If explicit BCDBoot succeeds but firmware has no target Windows Boot Manager entry, route to the missing-UEFI-entry procedure; repeating /s will not create that NVRAM entry.
If 0xc0000034, 0xc000000f, 0xc0000098, or 0xc000000e appears, route by the complete file path and BCD enumeration.
If Setup still reports the same message before the first restart, inspect the final Setup log failure; USB removal did not address it.
If the system partition is full, damaged, or ambiguous, stop. Do not delete boot files or choose a different small partition by size.
If the complete readable boot tree cannot be captured and compared exactly, BCDBoot remains blocked unless the verified-system-image gate in section 7 is actually satisfied.
If rollback is required, the restored live tree must compare exactly with boot-tree-before from the recorded attempt before the rollback is called complete.

Do not do this

Do not remove installation media while Setup is still copying/reading files.
Do not repeatedly boot the USB after Setup has applied Windows unless intentionally returning to repair tools.
Do not run BCDBoot against every \Windows directory.
Do not run bootrec /rebuildbcd, bootsect, or generic BCD-deletion recipes in addition to BCDBoot under this article.
Do not format an EFI/System Reserved partition, even if Microsoft examples show formatting as an optional deployment action.
Do not delete, clean, convert, or repartition the target disk.
Do not change UEFI/legacy mode or storage-controller mode.
Do not use /f ALL on the internal system partition as a substitute for detecting GPT versus MBR.
Do not delete the existing default Windows entry or a non-Windows boot manager.
Do not assume Boot files successfully created proves firmware will select the correct disk.
Do not run BCDBoot with only a BCD export. It can replace other files in the boot tree.
Do not use a fixed or previously used evidence directory, and do not overwrite a prior boot-tree-before capture.
Do not restore from whichever evidence directory appears newest; use only the exact path in the externally recorded attempt and its matching attempt-path.txt.
Do not write CAPTURED_BOOT_TREE or VERIFIED_SYSTEM_IMAGE merely to bypass a failed gate.

Rollback

Branch A

Reconnect the installer USB only when returning deliberately to repair/install media. Use the one-time boot menu rather than permanently changing firmware order. No BCD rollback is required if no BCD command was run.

Branch B

If the new entry is wrong or BCDBoot changes the active boot tree undesirably, start the original working Windows if it remains bootable; otherwise enter WinRE. Do not treat BCD-system-before as a complete rollback because BCDBoot can change files beyond the BCD. Use the complete-tree procedure below.

Branch C

Return to WinRE and reassign the same proved system partition letter. Do not copy only BCD-before; use the complete-tree procedure below.

Complete-tree rollback for Branch B or C

Enter the exact attempt path recorded before the write and validate its marker. Do not use a wildcard, timestamp sort, or “latest” directory:

set "FIX68_ATTEMPT="
set /p "FIX68_ATTEMPT=Enter the exact recorded FIX-068 attempt path: "
if not exist "%FIX68_ATTEMPT%\attempt-path.txt" (echo STOP: attempt marker is missing & exit /b 1)
findstr /x /c:"%FIX68_ATTEMPT%" "%FIX68_ATTEMPT%\attempt-path.txt" >nul
if errorlevel 1 (echo STOP: recorded path and attempt marker differ & exit /b 1)
findstr /x /c:"CAPTURED_BOOT_TREE" /c:"VERIFIED_SYSTEM_IMAGE" "%FIX68_ATTEMPT%\write-gate.txt" >nul
if errorlevel 1 (echo STOP: attempt has no valid rollback gate & exit /b 1)

Reidentify the target disk and the same system partition from list disk, list volume, detail disk, detail volume, file-system type, and the pre-write photographs. Assign the temporary letter only after the identity matches, then set %FIX68_SYS% to that proved volume. Stop on any mismatch.
If write-gate.txt says VERIFIED_SYSTEM_IMAGE, do not attempt a partial file rollback. Start the independently prepared recovery media, select the exact recorded image, restore every partition covered by the gate—including the complete system/EFI partition—and run the image product's post-restore verification. Then continue at step 8.

If write-gate.txt says CAPTURED_BOOT_TREE, preserve the failed after-state before restoring. The destination below is guarded so a previous after-state cannot be overwritten. Use exactly one layout branch:

if exist "%FIX68_ATTEMPT%\boot-tree-failed-state" (echo STOP: failed-state directory already exists & exit /b 1)
md "%FIX68_ATTEMPT%\boot-tree-failed-state"

UEFI/GPT:

robocopy "%FIX68_SYS%\EFI" "%FIX68_ATTEMPT%\boot-tree-failed-state\EFI" /E /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /FFT /LOG:"%FIX68_ATTEMPT%\failed-tree-copy.log"
if errorlevel 8 (echo STOP: failed EFI state could not be preserved & exit /b 1)

BIOS/MBR:

robocopy "%FIX68_SYS%\Boot" "%FIX68_ATTEMPT%\boot-tree-failed-state\Boot" /E /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /LOG:"%FIX68_ATTEMPT%\failed-tree-copy.log"
if errorlevel 8 (echo STOP: failed BIOS Boot state could not be preserved & exit /b 1)
robocopy "%FIX68_SYS%\" "%FIX68_ATTEMPT%\boot-tree-failed-state" bootmgr /COPY:DAT /R:0 /W:0 /LOG+:"%FIX68_ATTEMPT%\failed-tree-copy.log"
if errorlevel 8 (echo STOP: failed bootmgr state could not be preserved & exit /b 1)

Restore the exact captured tree only when this is the same immediate failed attempt and no legitimate boot-manager, firmware, operating-system, or vendor update has occurred since the capture. If there may be intervening changes, stop for specialist comparison instead of mirroring. A Robocopy result below 8 for the actual mirror can represent successful copying or removal; the following dry-run must then report no difference.

UEFI/GPT:

robocopy "%FIX68_ATTEMPT%\boot-tree-before\EFI" "%FIX68_SYS%\EFI" /MIR /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /FFT /LOG:"%FIX68_ATTEMPT%\rollback-restore.log"
if errorlevel 8 (echo STOP: EFI tree restoration failed & exit /b 1)
robocopy "%FIX68_ATTEMPT%\boot-tree-before\EFI" "%FIX68_SYS%\EFI" /MIR /L /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /FFT /LOG:"%FIX68_ATTEMPT%\rollback-verify.log"
if errorlevel 1 (echo STOP: restored EFI tree does not match before-state & exit /b 1)
fc /b "%FIX68_ATTEMPT%\boot-tree-before\EFI\Microsoft\Boot\BCD" "%FIX68_SYS%\EFI\Microsoft\Boot\BCD" > "%FIX68_ATTEMPT%\rollback-BCD-compare.txt"
if errorlevel 1 (echo STOP: restored EFI BCD does not match before-state & exit /b 1)
bcdedit /store "%FIX68_SYS%\EFI\Microsoft\Boot\BCD" /enum all /v > "%FIX68_ATTEMPT%\BCD-restored.txt"
if errorlevel 1 (echo STOP: restored EFI BCD is not readable & exit /b 1)

BIOS/MBR:

robocopy "%FIX68_ATTEMPT%\boot-tree-before\Boot" "%FIX68_SYS%\Boot" /MIR /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /LOG:"%FIX68_ATTEMPT%\rollback-restore.log"
if errorlevel 8 (echo STOP: BIOS Boot tree restoration failed & exit /b 1)
robocopy "%FIX68_ATTEMPT%\boot-tree-before" "%FIX68_SYS%\" bootmgr /COPY:DAT /R:0 /W:0 /LOG+:"%FIX68_ATTEMPT%\rollback-restore.log"
if errorlevel 8 (echo STOP: bootmgr restoration failed & exit /b 1)
robocopy "%FIX68_ATTEMPT%\boot-tree-before\Boot" "%FIX68_SYS%\Boot" /MIR /L /COPY:DAT /DCOPY:DAT /R:0 /W:0 /XJ /LOG:"%FIX68_ATTEMPT%\rollback-verify.log"
if errorlevel 1 (echo STOP: restored BIOS Boot tree does not match before-state & exit /b 1)
fc /b "%FIX68_ATTEMPT%\boot-tree-before\bootmgr" "%FIX68_SYS%\bootmgr" > "%FIX68_ATTEMPT%\rollback-bootmgr-compare.txt"
if errorlevel 1 (echo STOP: restored bootmgr does not match before-state & exit /b 1)
fc /b "%FIX68_ATTEMPT%\boot-tree-before\Boot\BCD" "%FIX68_SYS%\Boot\BCD" > "%FIX68_ATTEMPT%\rollback-BCD-compare.txt"
if errorlevel 1 (echo STOP: restored BIOS BCD does not match before-state & exit /b 1)
bcdedit /store "%FIX68_SYS%\Boot\BCD" /enum all /v > "%FIX68_ATTEMPT%\BCD-restored.txt"
if errorlevel 1 (echo STOP: restored BIOS BCD is not readable & exit /b 1)

Compare BCD-restored.txt with BCD-before.txt. The identifiers, device, osdevice, loader path, default, and display order must match the recorded before-state. Do not “clean up” entries during rollback.
On UEFI Branch B, compare firmware-order-before.txt and firmware-order-after.txt. File-tree restoration does not restore NVRAM BootOrder. If BCDBoot created or reordered a firmware entry despite /p, restore only the exact captured order through the firmware setup interface or a separately validated bcdedit /set {fwbootmgr} displayorder ... command using only the recorded firmware-entry GUIDs. Do not guess GUIDs or delete an entry solely by its label.
Restart and confirm the original Windows entry works. Restart a second time and perform one cold start. If the image restore or exact tree comparison fails, keep the attempt evidence and stop for specialist recovery; do not run BCDBoot again.

Remove only temporary letters assigned by this procedure:

diskpart
list volume
select volume <system-volume-number>
detail volume
remove letter=S
select volume <target-Windows-volume-number>
detail volume
remove letter=N
exit

Omit any letter that existed before the procedure.

Verification

Require Setup to continue past the prior handoff point and complete OOBE.
Run winver and confirm the installed target version/build.
Run bcdedit /enum all /v from the completed Windows installation.
Confirm the active loader's device and osdevice resolve to the correct Windows volume, its path uses the appropriate Windows loader, and systemroot is \Windows.
Confirm there is no accidental duplicate/phantom boot entry. Do not delete a questionable entry until it is mapped to a real volume and a BCD backup exists.
Restart twice without installation media and perform one cold start.
Confirm the computer starts the target Windows without a one-time boot-menu intervention.
Verify user files, activation, storage, networking, Device Manager, and Windows Update.
Retain Setup logs and BCD before/after exports until a fresh system backup is made.

Confidence and stop conditions

Confidence is 80% when the exact Setup handoff/boot-configuration message is present and evidence places the case in one of two proven boundaries: installer USB is retaking the first reboot, or a complete new Windows directory lacks a valid boot entry in an otherwise working BCD. It is not an 80% claim that every instance is fixed by removing USB or running BCDBoot.

Stop when the target/system partition is ambiguous, storage is unstable, Setup has not actually applied a complete Windows image, the system partition is full/damaged, BCDBoot fails, a required UEFI NVRAM entry is absent, another boot manager owns startup, the message repeats before first restart, or a new BCD code points to a different mechanism. No independent TechXplored reproduction has been performed for this article.