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Update advanced-troubleshooting-boot-problems.md
- Set correct MarkDown spacing for [!NOTE] blocks - Add newline breaks to output text for readability - Reorder attrib command parameters to logical order - Add missing space between the command attrib and its parameters - Remove a redundant double backslash in a rename (`ren`) command - Remove redundant line "Start a text editor, such as Notepad." Closes #4631
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illfated
@ -14,8 +14,8 @@ ms.topic: troubleshooting
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# Advanced troubleshooting for Windows boot problems
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>[!NOTE]
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>This article is intended for use by support agents and IT professionals. If you're looking for more general information about recovery options, see [Recovery options in Windows 10](https://support.microsoft.com/help/12415).
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> [!NOTE]
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> This article is intended for use by support agents and IT professionals. If you're looking for more general information about recovery options, see [Recovery options in Windows 10](https://support.microsoft.com/help/12415).
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## Summary
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@ -58,14 +58,14 @@ Here is a summary of the boot sequence, what will be seen on the display, and ty
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Each phase has a different approach to troubleshooting. This article provides troubleshooting techniques for problems that occur during the first three phases.
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>[!NOTE]
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>If the computer repeatedly boots to the recovery options, run the following command at a command prompt to break the cycle:
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> [!NOTE]
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> If the computer repeatedly boots to the recovery options, run the following command at a command prompt to break the cycle:
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>
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>`Bcdedit /set {default} recoveryenabled no`
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> `Bcdedit /set {default} recoveryenabled no`
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>
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>If the F8 options don't work, run the following command:
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> If the F8 options don't work, run the following command:
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>
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>`Bcdedit /set {default} bootmenupolicy legacy`
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> `Bcdedit /set {default} bootmenupolicy legacy`
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## BIOS phase
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@ -98,8 +98,8 @@ The Startup Repair tool automatically fixes many common problems. The tool also
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To do this, follow these steps.
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>[!NOTE]
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>For additional methods to start WinRE, see [Entry points into WinRE](https://docs.microsoft.com/windows-hardware/manufacture/desktop/windows-recovery-environment--windows-re--technical-reference#span-identrypointsintowinrespanspan-identrypointsintowinrespanspan-identrypointsintowinrespanentry-points-into-winre).
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> [!NOTE]
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> For additional methods to start WinRE, see [Entry points into WinRE](https://docs.microsoft.com/windows-hardware/manufacture/desktop/windows-recovery-environment--windows-re--technical-reference#span-identrypointsintowinrespanspan-identrypointsintowinrespanspan-identrypointsintowinrespanentry-points-into-winre).
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1. Start the system to the installation media for the installed version of Windows.
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**Note** For more information, see [Create installation media for Windows](https://support.microsoft.com/help/15088).
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@ -132,8 +132,8 @@ To repair the boot sector, run the following command:
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BOOTREC /FIXBOOT
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```
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>[!NOTE]
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>Running **BOOTREC** together with **Fixmbr** overwrites only the master boot code. If the corruption in the MBR affects the partition table, running **Fixmbr** may not fix the problem.
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> [!NOTE]
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> Running **BOOTREC** together with **Fixmbr** overwrites only the master boot code. If the corruption in the MBR affects the partition table, running **Fixmbr** may not fix the problem.
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### Method 3: Fix BCD errors
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@ -153,10 +153,12 @@ If you receive BCD-related errors, follow these steps:
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4. You might receive one of the following outputs:
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- Scanning all disks for Windows installations. Please wait, since this may take a while...Successfully scanned Windows installations. Total identified Windows installations: 0
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- Scanning all disks for Windows installations. Please wait, since this may take a while...
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Successfully scanned Windows installations. Total identified Windows installations: 0
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The operation completed successfully.
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- Scanning all disks for Windows installations. Please wait, since this may take a while... Successfully scanned Windows installations. Total identified Windows installations: 1
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- Scanning all disks for Windows installations. Please wait, since this may take a while...
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Successfully scanned Windows installations. Total identified Windows installations: 1
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D:\Windows
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Add installation to boot list? Yes/No/All:
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@ -165,7 +167,7 @@ If the output shows **windows installation: 0**, run the following commands:
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```dos
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bcdedit /export c:\bcdbackup
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attrib c:\\boot\\bcd -h -r –s
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attrib c:\\boot\\bcd -r –s -h
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ren c:\\boot\\bcd bcd.old
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@ -174,10 +176,12 @@ bootrec /rebuildbcd
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After you run the command, you receive the following output:
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Scanning all disks for Windows installations. Please wait, since this may take a while...Successfully scanned Windows installations. Total identified Windows installations: 1{D}:\Windows
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Add installation to boot list? Yes/No/All: Y
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Scanning all disks for Windows installations. Please wait, since this may take a while...
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Successfully scanned Windows installations. Total identified Windows installations: 1
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{D}:\Windows
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Add installation to boot list? Yes/No/All: Y
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5. Try again to start the system.
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5. Try restarting the system.
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### Method 4: Replace Bootmgr
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@ -187,26 +191,24 @@ If methods 1 and 2 do not fix the problem, replace the Bootmgr file from drive C
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2. Run the **attrib** command to unhide the file:
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```dos
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attrib-s -h -r
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attrib -r -s -h
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```
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3. Run the same **attrib** command on the Windows (system drive):
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```dos
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attrib-s -h –r
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attrib -r -s -h
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```
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4. Rename the Bootmgr file as Bootmgr.old:
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```dos
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ren c:\\bootmgr bootmgr.old
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ren c:\bootmgr bootmgr.old
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```
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5. Start a text editor, such as Notepad.
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5. Navigate to the system drive.
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6. Navigate to the system drive.
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6. Copy the Bootmgr file, and then paste it to the System Reserved partition.
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7. Copy the Bootmgr file, and then paste it to the System Reserved partition.
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8. Restart the computer.
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7. Restart the computer.
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### Method 5: Restore System Hive
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