Keep PC Awake Script (Anti-AFK)

# Keep PC Awake - made with ToolKit360
# Stops Windows from sleeping and turning off the screen while this window is open, for 2 hours.
# It asks Windows directly (SetThreadExecutionState); it does not press keys or move the mouse.
#
# How to run:  right-click this file > Run with PowerShell (Windows 11: Show more options first).
# How to stop: close this window or press Ctrl+C. Normal sleep settings return straight away.

$minutes = 120   # how long to keep awake; 0 = until you close this window

Add-Type -Namespace ToolKit360 -Name Power -MemberDefinition '[DllImport("kernel32.dll")] public static extern uint SetThreadExecutionState(uint esFlags);'

# ES_CONTINUOUS (0x80000000) + ES_SYSTEM_REQUIRED (0x1) + ES_DISPLAY_REQUIRED (0x2)
$keepAwake = [uint32]2147483651
$normal = [uint32]2147483648

$Host.UI.RawUI.WindowTitle = 'Keep PC Awake - close this window to stop'
if ($minutes -gt 0) { $end = (Get-Date).AddMinutes($minutes) } else { $end = [datetime]::MaxValue }

try {
    if ($minutes -gt 0) {
        Write-Host ("Keeping this PC awake until {0:HH:mm}. Close this window to stop sooner." -f $end)
    } else {
        Write-Host 'Keeping this PC awake. Close this window or press Ctrl+C to stop.'
    }
    while ((Get-Date) -lt $end) {
        [void][ToolKit360.Power]::SetThreadExecutionState($keepAwake)
        Start-Sleep -Seconds 30
    }
} finally {
    [void][ToolKit360.Power]::SetThreadExecutionState($normal)
    Write-Host 'Stopped. Windows is back to its normal sleep settings.'
}

How to run

Right-click KeepAwake.ps1 and choose Run with PowerShell (on Windows 11, Show more options first). Double-clicking only opens it in Notepad. If Windows says running scripts is disabled, open PowerShell in that folder and run: powershell -ExecutionPolicy Bypass -File .\KeepAwake.ps1

How to stop

Close the PowerShell window or press Ctrl+C in it. Windows goes back to its normal sleep settings straight away.