$taskmgrPath = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\TaskManager'
If (!(Test-Path $taskmgrPath))
{
    New-Item -Path $taskmgrPath -Force
}
$taskmgr = Get-Process Taskmgr -ErrorAction SilentlyContinue
If ($taskmgr)
{
    #$taskmgr | Stop-Process -Force
    $taskmgr | Wait-Process
}
$preferences = Get-ItemProperty -Path $taskmgrPath -Name Preferences -ErrorAction SilentlyContinue
If (!($preferences))
{
    Start-Process -FilePath Taskmgr
    $taskmgr = Get-Process Taskmgr -ErrorAction SilentlyContinue
    If ($taskmgr)
    {
       #$taskmgr | Stop-Process -Force
       $taskmgr | Wait-Process
    }
    $preferences = Get-ItemProperty -Path $taskmgrPath -Name Preferences -ErrorAction SilentlyContinue
}
$preferences.Preferences[28] = 0
New-ItemProperty -Path $taskmgrPath -Name Preferences -Type Binary -Value $preferences.Preferences -Force
If ($taskmgr)
{
   $taskmgr | Stop-Process -Force
}
Start-Process -FilePath Taskmgr