#Requires -Version 5.1
<#
    JbTecWiz Support Centre -- generated fix script

    Fault : "Automatic Repair couldn't repair your PC" -- the repair loop
    Fix   : Repair the filesystem and the boot record
    Source: https://jbtecwiz.com/support/win-rec-autorepair-loop

    Run as     : WinRE Command Prompt
    Expect     : 1-2 hours
    Risk       : medium
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    After a power loss, or when the log names a disk or boot configuration
    error.

    HOW TO UNDO IT
    Export the boot configuration first with bcdedit /export, and restore
    with bcdedit /import.

    This script walks the fix one step at a time and asks before each
    one. Steps with no command are things you do yourself -- it prints
    those and waits. Run with -DryRun to print without executing.

    --------------------------------------------------------------------
    NO WARRANTY - USE AT YOUR OWN RISK

    This script is provided by JbTecWiz as-is and with no warranty of any
    kind, express or implied. You run it entirely at your own risk.

    JbTecWiz accepts no liability for any loss or damage arising from its
    use, including but not limited to data loss, downtime, or configuration
    changes that turn out to be wrong for your system.

    You are responsible for reading this script before running it, for
    satisfying yourself that it suits the machine in front of you, and for
    having a working backup first. Some steps cannot be undone.
    --------------------------------------------------------------------
#>

[CmdletBinding()]
param(
    # Print every step and command without running anything.
    [switch]$DryRun,
    # Do not ask before each step. Read the script first if you use this.
    [switch]$Unattended
)

$ErrorActionPreference = 'Stop'
$script:Failed = 0

function Write-Rule { param([string]$Text)
    Write-Host ''
    Write-Host ('-' * 70) -ForegroundColor DarkGray
    if ($Text) { Write-Host $Text -ForegroundColor Cyan }
}

function Show-Prose { param([string]$Text, [string]$Colour = "Gray")
    if (-not $Text) { return }
    $words = $Text -split "\s+"; $line = "  "
    foreach ($w in $words) {
        if (($line.Length + $w.Length) -gt 74) { Write-Host $line -ForegroundColor $Colour; $line = "  " }
        $line += "$w "
    }
    if ($line.Trim()) { Write-Host $line -ForegroundColor $Colour }
}

function Invoke-Step {
    param(
        [int]$Number, [string]$Do, [string]$Why,
        [scriptblock]$Command, [switch]$Manual, [string]$Shell = "powershell"
    )
    Write-Rule "  Step $Number of 4"
    Show-Prose $Do "White"
    if ($Why) { Write-Host ""; Show-Prose $Why "DarkGray" }

    if ($Manual) {
        Write-Host ''
        Write-Host '  -> Do this yourself, then press Enter to carry on.' -ForegroundColor Yellow
        if (-not $Unattended -and -not $DryRun) { [void](Read-Host) }
        return
    }

    Write-Host ''
    foreach ($l in ($Command.ToString().Trim() -split "`n")) {
        Write-Host ("    " + $l.Trim()) -ForegroundColor Green
    }
    Write-Host ''

    if ($DryRun) { Write-Host "  (dry run -- not executed)" -ForegroundColor DarkGray; return }
    if (-not $Unattended) {
        $a = Read-Host "  Run this step? [Y]es / [S]kip / [Q]uit"
        if ($a -match "^[Qq]") { Write-Host "  Stopped at your request."; exit 0 }
        if ($a -match "^[Ss]") { Write-Host "  Skipped." -ForegroundColor DarkGray; return }
    }
    try { & $Command }
    catch {
        $script:Failed++
        Write-Host ("  Step $Number failed: " + $_.Exception.Message) -ForegroundColor Red
        Show-Prose "The rest of the fix may depend on this. Read the write-up before carrying on." "Red"
        if (-not $Unattended) {
            $c = Read-Host "  Carry on anyway? [y/N]"
            if ($c -notmatch "^[Yy]") { exit 1 }
        }
    }
}

Write-Rule
Write-Host '  "Automatic Repair couldn''t repair your PC" -- the repair loop' -ForegroundColor White
Write-Host '  Repair the filesystem and the boot record' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: medium   Reversible   1-2 hours'
Write-Host ''
Show-Prose 'No warranty. Use at your own risk - JbTecWiz accepts no liability. Read it before you run it, and have a backup.' 'DarkYellow'
Write-Rule

if (-not $Unattended -and -not $DryRun) {
    $go = Read-Host '  Ready? [y/N]'
    if ($go -notmatch "^[Yy]") { Write-Host "  Nothing was changed."; exit 0 }
}

Invoke-Step -Number 1 -Do 'Check the disk first. A filesystem error makes every later repair fail confusingly.' -Command {
    cmd.exe /c 'chkdsk D: /f /r'
}

Invoke-Step -Number 2 -Do 'Rebuild the boot configuration. Do this in order -- each step depends on the previous one.' -Command {
    cmd.exe /c 'bootrec /fixmbr & bootrec /fixboot & bootrec /scanos & bootrec /rebuildbcd'
}

Invoke-Step -Number 3 -Do 'On a UEFI machine, bootrec /fixboot commonly returns Access is denied. Repair the EFI partition instead.' -Why 'bcdboot writes a fresh boot store to the EFI system partition from the Windows install itself. It is the reliable UEFI equivalent of the whole bootrec sequence and it is what to reach for when fixboot is denied.' -Command {
    cmd.exe /c 'diskpart & list disk & sel disk 0 & list vol & sel vol 1 & assign letter=S: & exit & bcdboot D:\Windows /s S: /f UEFI'
}

Invoke-Step -Number 4 -Do 'Restart and remove the assigned letter afterwards if you assigned one.' -Manual

Write-Rule "  Confirm it worked"
Show-Prose 'The machine boots to Windows without the repair screen.' 'White'
Write-Host ''
if (-not $DryRun) {
    cmd.exe /c 'bcdedit /enum'
}

Write-Rule
if ($script:Failed -gt 0) {
    Write-Host ("  Finished with " + $script:Failed + " failed step(s).") -ForegroundColor Yellow
    Show-Prose 'Read the full write-up at https://jbtecwiz.com/support/win-rec-autorepair-loop' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Export the boot configuration first with bcdedit /export, and restore with bcdedit /import.' 'DarkGray'
Write-Rule