Windows 10 Recovery Notes

Carry out the following steps to fix Windows 10 boot error, e.g.  BSOD 0c000007b error:

• Boot Windows 10 ISO USB
• Click ‘Next’ on main screen after selecting appropriate language options
• Select ‘Repair Computer’
• Select ‘Troubleshoot’ > ‘Advance Options’
• Select Command Prompt and run following commands – note SFC and DISM can take some time to complete
  • CHKDSK D:/f
  • MKDIR D:\Scratch
  • DISM /Image:D:\ /Cleanup-Image /RestoreHealth /ScratchDir:D:\Scratch
    
  • SFC /Scannow /OffBootDir=D:\ /OffWinDir=D:\Windows
• Exit Command window back to Menu
• Select ‘Troubleshoot’ > ‘Advance Options’
• Click ‘Shutdown’
• Power up
• Boot Windows system – hopefully!
• Login and optionally run the following from an Admin Command window to make sure no more errors remain:
  • SFC /scannow
  • DISM /online /cleanup-image /checkhealth
  • Optionally repair check health errors
  • DISM /online /cleanup-image /restorehealth
    

• Substitute drive D: above for the Windows drive
• ScratchDir option used to create extra temporary storage to avoid  “DISM error: The scratch directory size might be insufficient to perform this operation”