How to change Power options through registry or through command line?
I want to change powercfg.cpl "Power Options" directly through registry.
Specifically I want to change this:
To these settings:
I am using a desktop computer on alternating current power, therefore power saving is unnecessary and it impairs performance; I have disabled fast boot in BIOS.
I have opened this registry key in regedit.exe:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power
And the only things I can make out inside the key are:
HiberFileSizePercent REG_DWORD 0
HibernateEnabled REG_DWORD 0
HibernateEnabledDefault REG_DWORD 1
I tried to use powercfg.exe and this is what I got:
C:\Windows\system32>powercfg /l
Existing Power Schemes (* Active)
-----------------------------------
Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced)
Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c (High performance) *
Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a (Power saver)
C:\Windows\system32>powercfg /q
Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c (High performance)
GUID Alias: SCHEME_MIN
Subgroup GUID: 0012ee47-9041-4b5d-9b77-535fba8b1442 (Hard disk)
GUID Alias: SUB_DISK
Power Setting GUID: 6738e2c4-e8a5-4a42-b16a-e040e769756e (Turn off hard disk after)
GUID Alias: DISKIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x000004b0
Subgroup GUID: 02f815b5-a5cf-4c84-bf20-649d1f75d3d8 (Internet Explorer)
Power Setting GUID: 4c793e7d-a264-42e1-87d3-7a0d2f523ccd (JavaScript Timer Frequency)
Possible Setting Index: 000
Possible Setting Friendly Name: Maximum Power Savings
Possible Setting Index: 001
Possible Setting Friendly Name: Maximum Performance
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Subgroup GUID: 0d7dbae2-4294-402a-ba8e-26777e8488cd (Desktop background settings)
Power Setting GUID: 309dce9b-bef4-4119-9921-a851fb12f0f4 (Slide show)
Possible Setting Index: 000
Possible Setting Friendly Name: Available
Possible Setting Index: 001
Possible Setting Friendly Name: Paused
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: 19cbb8fa-5279-450e-9fac-8a3d5fedd0c1 (Wireless Adapter Settings)
Power Setting GUID: 12bbebe6-58d6-4636-95bb-3217ef867c1a (Power Saving Mode)
Possible Setting Index: 000
Possible Setting Friendly Name: Maximum Performance
Possible Setting Index: 001
Possible Setting Friendly Name: Low Power Saving
Possible Setting Index: 002
Possible Setting Friendly Name: Medium Power Saving
Possible Setting Index: 003
Possible Setting Friendly Name: Maximum Power Saving
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: 238c9fa8-0aad-41ed-83f4-97be242c8f20 (Sleep)
GUID Alias: SUB_SLEEP
Power Setting GUID: 29f6c1db-86da-48c5-9fdb-f2b67b1f44da (Sleep after)
GUID Alias: STANDBYIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Power Setting GUID: 94ac6d29-73ce-41a6-809f-6363ba21b47e (Allow hybrid sleep)
GUID Alias: HYBRIDSLEEP
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: 9d7815a6-7ee4-497e-8888-515a05f02364 (Hibernate after)
GUID Alias: HIBERNATEIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Power Setting GUID: bd3b718a-0680-4d9d-8ab2-e1d2b4ac806d (Allow wake timers)
GUID Alias: RTCWAKE
Possible Setting Index: 000
Possible Setting Friendly Name: Disable
Possible Setting Index: 001
Possible Setting Friendly Name: Enable
Possible Setting Index: 002
Possible Setting Friendly Name: Important Wake Timers Only
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Subgroup GUID: 2a737441-1930-4402-8d77-b2bebba308a3 (USB settings)
Power Setting GUID: 48e6b7a6-50f5-4782-a5d4-53bb8f07e226 (USB selective suspend setting)
Possible Setting Index: 000
Possible Setting Friendly Name: Disabled
Possible Setting Index: 001
Possible Setting Friendly Name: Enabled
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Subgroup GUID: 4f971e89-eebd-4455-a8de-9e59040e7347 (Power buttons and lid)
GUID Alias: SUB_BUTTONS
Power Setting GUID: a7066653-8d6c-40a8-910e-a1f54b84c7e5 (Start menu power button)
GUID Alias: UIBUTTON_ACTION
Possible Setting Index: 000
Possible Setting Friendly Name: Sleep
Possible Setting Index: 001
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 002
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: 501a4d13-42af-4429-9fd1-a8218c268e20 (PCI Express)
GUID Alias: SUB_PCIEXPRESS
Power Setting GUID: ee12f906-d277-404b-b6da-e5fa1a576df5 (Link State Power Management)
GUID Alias: ASPM
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: Moderate power savings
Possible Setting Index: 002
Possible Setting Friendly Name: Maximum power savings
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: 54533251-82be-4824-96c1-47b60b740d00 (Processor power management)
GUID Alias: SUB_PROCESSOR
Power Setting GUID: 893dee8e-2bef-41e0-89c6-b55d0929964c (Minimum processor state)
GUID Alias: PROCTHROTTLEMIN
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000064
Current DC Power Setting Index: 0x00000005
Power Setting GUID: 94d3a615-a899-4ac5-ae2b-e4d8f634367f (System cooling policy)
GUID Alias: SYSCOOLPOL
Possible Setting Index: 000
Possible Setting Friendly Name: Passive
Possible Setting Index: 001
Possible Setting Friendly Name: Active
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: bc5038f7-23e0-4960-96da-33abaf5935ec (Maximum processor state)
GUID Alias: PROCTHROTTLEMAX
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000064
Current DC Power Setting Index: 0x00000064
Subgroup GUID: 7516b95f-f776-4464-8c53-06167f40cc99 (Display)
GUID Alias: SUB_VIDEO
Power Setting GUID: 3c0bc021-c8a8-4e07-a973-6b14cbcb2b7e (Turn off display after)
GUID Alias: VIDEOIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000708
Current DC Power Setting Index: 0x00000258
Power Setting GUID: aded5e82-b909-4619-9949-f5d71dac0bcb (Display brightness)
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000064
Current DC Power Setting Index: 0x00000064
Power Setting GUID: f1fbfde2-a960-4165-9f88-50667911ce96 (Dimmed display brightness)
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000032
Current DC Power Setting Index: 0x00000032
Power Setting GUID: fbd9aa66-9553-4097-ba44-ed6e9d65eab8 (Enable adaptive brightness)
GUID Alias: ADAPTBRIGHT
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: e73a048d-bf27-4f12-9731-8b2076e8891f (Battery)
GUID Alias: SUB_BATTERY
Power Setting GUID: 5dbb7c9f-38e9-40d2-9749-4f8a0e9f640f (Critical battery notification)
GUID Alias: BATFLAGSCRIT
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: 637ea02f-bbcb-4015-8e2c-a1c7b9c0b546 (Critical battery action)
GUID Alias: BATACTIONCRIT
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000002
Current DC Power Setting Index: 0x00000002
Power Setting GUID: 8183ba9a-e910-48da-8769-14ae6dc1170a (Low battery level)
GUID Alias: BATLEVELLOW
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x0000000a
Current DC Power Setting Index: 0x0000000a
Power Setting GUID: 9a66d8d7-4ff7-4ef9-b5a2-5a326ca2a469 (Critical battery level)
GUID Alias: BATLEVELCRIT
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000005
Current DC Power Setting Index: 0x00000005
Power Setting GUID: bcded951-187b-4d05-bccc-f7e51960c258 (Low battery notification)
GUID Alias: BATFLAGSLOW
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: d8742dcb-3e6a-4b3c-b3fe-374623cdcf06 (Low battery action)
GUID Alias: BATACTIONLOW
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Power Setting GUID: f3c5027d-cd16-4930-aa6b-90db844a8f00 (Reserve battery level)
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000007
Current DC Power Setting Index: 0x00000007
I really don't understand any of these...
How can I use a script to automatically change Power Options to the settings posted above, as I don't want to do it manually?
asked on Super User Jan 22, 2021 by 
Xeнεi Ξэnвϵς
Xeнεi Ξэnвϵς1 Answer
Never mind, I have solved it, again (sort of).
I just exported the entire registry key to a registry file named PowerCFG.reg located on Desktop using regedit.exe.
The file is way too long to be posted here, and I have converted it to a ps1 file which is even longer, I have uploaded them to Google Drive:PowerCFG.reg and PowerCFG_reg.ps1
The registry file has 9232 lines and 645546 characters, the script file has 3491 lines and 855339 characters. I figure I might just import the registry file.
To understand the guids and hexes is just too hard and will cost too much energy, it's not very efficient.
However, since all the settings are stored in this registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power
Simply exporting and importing it should set the settings to what I want them to be, I don't need to understand each of these keys and values, I just need to tell the computer to import the key.
I have confirmed, simply double clicking or reg import will not properly import the settings, access is denied;
So I imported the key by:
psexec -S cmd /k reg import PowerCFG.reg
With TrustedInstaller privilege, the command completed successfully without errors.
P.S.
Trying to run the _reg.ps1 file will generate many errors like this one:
Set-ItemProperty: C:\Users\Estranger\Desktop\PowerCFG_reg.ps1:752
Line |
752 | Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Power\ …
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| Cannot convert value "0xda7f5e8cbfe8964a9a85a6e23a8c635c" to type "System.Byte[]". Error: "Cannot
| convert value "0xda7f5e8cbfe8964a9a85a6e23a8c635c" to type "System.Byte". Error: "Value was either too
| large or too small for a UInt32.""
The offenders are REG_BINARY values.
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