Select the Power button action (plugged in): registry value ACSettingIndexComputerHKLM\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280

Policy ID: ACPowerButtonAction_2
Scope: Computer Configuration
Supported on: At least Windows Vista
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: System › Power Management › Button Settings

Registry

ACSettingIndex

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280 Current key

Enabled value: Depends on the option value
Element: Power Button Action

Options
Item	Stored value
Take no action	0
Sleep	1
Hibernate	2
Shut down	3

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280]

; Options (use only one)
; Take no action
"ACSettingIndex"=dword:00000000
; Sleep
"ACSettingIndex"=dword:00000001
; Hibernate
"ACSettingIndex"=dword:00000002
; Shut down
"ACSettingIndex"=dword:00000003

CMD

:: Options (use only one)

:: Take no action
reg add "HKLM\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280" /v "ACSettingIndex" /t REG_DWORD /d 0 /f
:: Sleep
reg add "HKLM\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280" /v "ACSettingIndex" /t REG_DWORD /d 1 /f
:: Hibernate
reg add "HKLM\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280" /v "ACSettingIndex" /t REG_DWORD /d 2 /f
:: Shut down
reg add "HKLM\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280" /v "ACSettingIndex" /t REG_DWORD /d 3 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280' -Force | Out-Null

# Options (use only one)
# Take no action
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280' -Name 'ACSettingIndex' -PropertyType DWord -Value 0 -Force | Out-Null
# Sleep
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280' -Name 'ACSettingIndex' -PropertyType DWord -Value 1 -Force | Out-Null
# Hibernate
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280' -Name 'ACSettingIndex' -PropertyType DWord -Value 2 -Force | Out-Null
# Shut down
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Power\PowerSettings\7648EFA3-DD9C-4E3E-B566-50F929386280' -Name 'ACSettingIndex' -PropertyType DWord -Value 3 -Force | Out-Null