optimize.ps1

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<#
.NOTES
    Author         : EndLordHD @EndCod3r
    GitHub         : https://github.com/EndCod3r
    Version        : Pre-release v0.2.0
#>

# Many of these tweaks are from ChrisTitusTech/winutil go check out his repo

param(
    [switch]$AcceptAllTweaks,
    [switch]$AcceptRecommendedTweaks
)

if ($AcceptAllTweaks) {
    $AcceptRecommendedTweaks = $true
    Read-Host -Prompt "
    You gave the parameter to accept all tweaks.
    This is HIGHLY unrecommended if you don't know what all of the tweaks do.
    Press enter to continue or CTRL+C to exit."
}

# Sets variable for temporary files directory
$TempFolder = $env:TEMP + "\ec-pc-optimizer"

# Tests if the temp directory (script has been ran before) and removes it and if it doesn't exist it creates it
if (Test-Path -Path $TempFolder) {
    Remove-Item -Recurse -Force $TempFolder
} else { mkdir $TempFolder | Out-Null }

# Tests if config folder has been downloaded locally and if not it downloads the files to the temp directory
if (Test-Path -Path .\Config) {
    $configdir = '.\Config'
} else { 
    $configdir = $TempFolder
    Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/EndCod3r/pc-optimizer/main/Config/services.json" -OutFile $TempFolder\services.json
    Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/EndCod3r/pc-optimizer/main/Config/tele.json" -OutFile $TempFolder\tele.json
}

# Checking for admin privileges
$currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
if (-Not $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator) ) {
    Write-Output "Please run this script as administrator."
    exit
}

# Create restore point
$userinput = Read-Host -Prompt 'Do you want to have a restore point created? (Recommended) (Y/n)'
$userinput = $userinput.ToLower()
if ( $userinput -eq 'y' -or !$userinput ) {
    Checkpoint-Computer -Description "Pre-Optimizations" -RestorePointType "MODIFY_SETTINGS"
    Write-Output "If anything happens that you don't want then you can go back to this restore point." 
}

# Checks if Ultimate Performance plan exists and if it doesn't it adds it
if ($AcceptRecommendedTweaks) {
    $userinput = 'y'
} else {$userinput = Read-Host -Prompt 'Do you want to add Ultimate Performance power plan? (Recommended) (Y/n)'}

if ( $userinput -eq 'y' -or !$userinput ) {
    $powerSchemeName = "Ultimate Performance"
    $powerSchemeGuid = "e9a42b02-d5df-448d-aa00-03f14749eb61"

    $schemes = powercfg /list | Out-String -Stream

    $ultimateScheme = $schemes | Where-Object { $_ -match $powerSchemeName }
    if ($null -eq $ultimateScheme) {
        Write-Host "Power scheme '$powerSchemeName' not found. Adding..."

        # Adds the power plan
        powercfg /duplicatescheme $powerSchemeGuid
        powercfg -attributes SUB_SLEEP 7bc4a2f9-d8fc-4469-b07b-33eb785aaca0 -ATTRIB_HIDE
        powercfg -setactive $powerSchemeGuid
        powercfg -change -monitor-timeout-ac 0
        
        Write-Output "Make sure that the Ultimate Performance power plan is active."
        
        $i = 3
        do {
            Write-Host "Opeing Power Options in $i seconds."
            Start-Sleep 1
            $i--
        } while ($i -gt 0)
        
        control.exe /name Microsoft.PowerOptions
        
    } else {
        Write-Host "Power scheme '$powerSchemeName' already exists."
    }
}

# Set some services to manual
if ($AcceptRecommendedTweaks) {
    $userinput = 'y'
} else {$userinput = Read-Host -Prompt 'Do you want to optimize services? (Recommended) (Y/n)'}
if ( $userinput -eq 'y' -or !$userinput ) {

    $Services = Get-Content $configdir\services.json | ConvertFrom-Json

    for ($i = 0; $i -lt $Services.service.name.Count; $i++) {
        $Services.service.name[$i] | Set-Service -StartupType $Services.service.StartupType[$i] -ErrorAction SilentlyContinue
    }

    Write-Output "
    If you see any errors stating ""Service wasn't found"" or ""Access is denied,"" don't worry, nothing is wrong.
    "
}

# Delete C:\Windows\Temp and user's temporary files
if ($AcceptRecommendedTweaks) {
    $userinput = 'y'
} else {$userinput = Read-Host -Prompt 'Do you want to delete temporary files (Recommended) (Y/n)'}
if ( $userinput -eq 'y' -or !$userinput ) {
    Write-Output "Removing Windows Temporary Files (C:\Windows\Temp)"
    Start-Sleep 1
    Get-ChildItem -Path "C:\Windows\Temp" *.* -Recurse | Remove-Item -Force -Recurse -ErrorAction SilentlyContinue

    Write-Output "Removing User Temporary Files ($env:TEMP)"
    Start-Sleep 1
    Get-ChildItem -Path $env:TEMP *.* -Recurse | Remove-Item -Force -Recurse -ErrorAction SilentlyContinue
    
    Write-Output "
    If you see any errors stating ""Access is denied,"" don't worry, nothing is wrong.
    "
}

if ($AcceptRecommendedTweaks) {
    $userinput = 'y'
} else {$userinput = Read-Host -Prompt 'Do you want to run Disk Cleanup? (Recommended) (Y/n)'}
if ( $userinput -eq 'y' -or !$userinput ) {
    cleanmgr.exe /d C: /VERYLOWDISK
    Write-Output "Running DISM Image Cleanup"
    Dism.exe /Online /Cleanup-Image /StartComponentCleanup /ResetBase
}

if ($AcceptRecommendedTweaks) {
    $userinput = 'y'
} else {$userinput = Read-Host -Prompt "Do you want to disable Microsoft's telemetry? (Recommnded) (Y/n)"}
if ($userinput -eq 'y' -or !$userinput) {
    # this is just taken from ChrisTitusTech's winutil because I don't understand any of this

    bcdedit /set {current} bootmenupolicy Legacy | Out-Null
      If ((Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name CurrentBuild).CurrentBuild -lt 22557) {
          $taskmgr = Start-Process -WindowStyle Hidden -FilePath taskmgr.exe -PassThru
          Do {
              Start-Sleep -Milliseconds 100
              $preferences = Get-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\TaskManager" -Name "Preferences" -ErrorAction SilentlyContinue
          } Until ($preferences)
          Stop-Process $taskmgr
          $preferences.Preferences[28] = 0
          Set-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\TaskManager" -Name "Preferences" -Type Binary -Value $preferences.Preferences
      }
      Remove-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{0DB7E03F-FC29-4DC6-9020-FF41B59E513A}" -Recurse -ErrorAction SilentlyContinue

      # Fix Managed by your organization in Edge if regustry path exists then remove it

      If (Test-Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge") {
          Remove-Item -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -Recurse -ErrorAction SilentlyContinue
      }

      # Group svchost.exe processes
      $ram = (Get-CimInstance -ClassName Win32_PhysicalMemory | Measure-Object -Property Capacity -Sum).Sum / 1kb
      Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control" -Name "SvcHostSplitThresholdInKB" -Type DWord -Value $ram -Force

      $autoLoggerDir = "$env:PROGRAMDATA\Microsoft\Diagnosis\ETLLogs\AutoLogger"
      If (Test-Path "$autoLoggerDir\AutoLogger-Diagtrack-Listener.etl") {
          Remove-Item "$autoLoggerDir\AutoLogger-Diagtrack-Listener.etl"
      }
      icacls $autoLoggerDir /deny SYSTEM:`(OI`)`(CI`)F | Out-Null

      # Disable Defender Auto Sample Submission
      Set-MpPreference -SubmitSamplesConsent 2 -ErrorAction SilentlyContinue | Out-Null

      # Disables Scheduled Tasks
      $tele = Get-Content $configdir\tele.json | ConvertFrom-Json

      for ($i = 0; $i -lt $tele.ScheduledTask.name.Count; $i++) {
        Disable-ScheduledTask -TaskName $tele.ScheduledTask.name[$i] -ErrorAction SilentlyContinue

    }
    for ($i = 0; $i -lt $tele.registry.name.Count; $i++) {
        Set-ItemProperty -Path $tele.registry.Path[$i] -Name $tele.registry.Name[$i] -Value $tele.registry.Value[$i] -Type $tele.registry.Type[$i] 
    }
}


if ($AcceptAllTweaks) {
    $userinput = 'y'
} else {$userinput = Read-Host -Prompt "Do you want to disable IPv6? (Not Recommended Unless It's Causing Problems) (y/N)"}
if ($userinput -eq 'y') {
    $IPv6 = Get-Content $configdir\disable_ipv6.json | ConvertFrom-Json

    for ($i = 0; $i -lt $Registry.Count; $i++) {
        Set-ItemProperty -Path $IPv6.registry.Path[$i] -Name $IPv6.registry.Name[$i] -Value $IPv6.registry.Value[$i] -Type $IPv6.registry.Type[$i] 
    }
    Disable-NetAdapterBinding -Name "*" -ComponentID ms_tcpip6
}

if ((Test-Path -Path $TempFolder) -and ($configdir -eq $TempFolder)) {
    Write-Output "Cleaning up..."
    Remove-Item -Recurse -Force $TempFolder
}