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

    Fault : Device Manager Code 43 -- "Windows has stopped this device"
    Fix   : Replace the driver cleanly rather than updating over it
    Source: https://jbtecwiz.com/support/win-hw-code43

    Run as     : Elevated PowerShell, offline
    Expect     : 40 minutes
    Risk       : medium
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    Graphics or a device where an update is suspected. An install over a
    broken driver usually inherits the fault.

    HOW TO UNDO IT
    Device Manager -> Driver -> Roll Back Driver returns the previous
    version if Windows kept it.

    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 5"
    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 '  Device Manager Code 43 -- "Windows has stopped this device"' -ForegroundColor White
Write-Host '  Replace the driver cleanly rather than updating over it' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: medium   Reversible   40 minutes'
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 'Note the exact device and hardware ID first -- you need this to find the right driver.' -Command {
    Get-PnpDevice -Status Error | Select-Object -First 5 FriendlyName,InstanceId,Problem | Format-List
}

Invoke-Step -Number 2 -Do 'Download the correct driver from the hardware manufacturer before removing anything.' -Manual

Invoke-Step -Number 3 -Do 'Remove the existing driver and its package, not just the device.' -Why 'Uninstalling the device in Device Manager leaves the driver package in the store, and Windows reinstalls the same broken driver on the next scan. Removing the package is what makes the reinstall meaningful.' -Command {
    cmd.exe /c 'pnputil /enum-drivers | findstr /i "nvidia amd intel" & pnputil /delete-driver oem##.inf /uninstall /force'
}

Invoke-Step -Number 4 -Do 'Restart, then install the downloaded driver. For graphics, choose the clean install option the vendor''s installer offers.' -Manual

Invoke-Step -Number 5 -Do 'If the device still reports Code 43 with a fresh driver on a fresh boot, treat it as hardware and test it in another machine.' -Manual

Write-Rule "  Confirm it worked"
Show-Prose 'The device reports OK and the driver version matches what you installed.' 'White'
Write-Host ''
if (-not $DryRun) {
    Get-PnpDevice -FriendlyName '*your device*' | Get-PnpDeviceProperty -KeyName DEVPKEY_Device_DriverVersion | Format-List InstanceId,Data
}

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-hw-code43' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Device Manager -> Driver -> Roll Back Driver returns the previous version if Windows kept it.' 'DarkGray'
Write-Rule