Turn Off the hard disk (plugged in)
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows Vista
Path in the GPO console
Computer Configuration\Administrative Templates\System\Power Management\Hard Disk Settings Description
This policy setting specifies the period of inactivity before Windows turns off the hard disk. If you enable this policy setting, you must provide a value, in seconds, indicating how much idle time should elapse before Windows turns off the hard disk. If you disable or do not configure this policy setting, users can see and change this setting.
Registry
HKLM
Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_Power/DiskACPowerDownTimeOut_2 Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Turn Off the hard disk (plugged in)
; State: Enabled
; Supported on: At least Windows Vista
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E]
"ACSettingIndex"=dword:00000000More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Turn Off the hard disk (plugged in)
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'ACSettingIndex' -Value 0 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_Power/DiskACPowerDownTimeOut_2
Data type: String
Value:
<enabled/>
<data id="EnterDiskACPowerDownTimeOut" value="0"/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Turn Off the hard disk (plugged in)
# State: Enabled
# Supported on: At least Windows Vista
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E' -Name 'ACSettingIndex' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Turn Off the hard disk (plugged in)
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'ACSettingIndex' -Value 0 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Turn Off the hard disk (plugged in)
# State: Enabled
# Supported on: At least Windows Vista
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Turn Off the hard disk (plugged in)
# State: Enabled
# Supported on: At least Windows Vista
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E' -Name 'ACSettingIndex' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Turn Off the hard disk (plugged in)
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'ACSettingIndex' -Value 0 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.