Solved Windows Power Plan Seems to Change from Balanced to Power Saver by Itself


hsehestedt

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On the system listed as my primary here (11th Gen i7 Based PC), I have found that the system has seemingly changed from the Balanced power plan to the Power Saver plan without my doing anything at all (at least that I am aware of).

My system is set to wake automatically at 7:55 AM every day. Macrium reflect then performs the daily backup at 8:00 AM. Once turned on, the system will stay on because my settings in the balanced power plan are for no sleep or hibernation, ever.

However, over the past month or so I have discovered that the system was in a sleeping state roughly 4 times now. Every time, the reason is the same: The power plan has changed.

Has anyone else seen this behavior or are you aware of any software or settings that can cause this to happen? For the life of me I simply cannot determine a cause.
 

My Computers

System One System Two

  • OS
    Win11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Intel i7-11700K
    Motherboard
    ASUS Prime Z590-A
    Memory
    128GB Crucial Ballistix 3200MHz DRAM
    Graphics Card(s)
    No GPU - CPU graphics only (for now)
    Sound Card
    Realtek (on motherboard)
    Monitor(s) Displays
    HP Envy 32
    Screen Resolution
    2560 x 1440
    Hard Drives
    1 x 1TB NVMe Gen 4 x 4 SSD
    1 x 2TB NVMe Gen 3 x 4 SSD
    2 x 512GB 2.5" SSDs
    2 x 8TB HD
    PSU
    Corsair HX850i
    Case
    Corsair iCue 5000X RGB
    Cooling
    Noctua NH-D15 chromax.black cooler + 10 case fans
    Keyboard
    CODE backlit mechanical keyboard
    Mouse
    Logitech MX Master 3
    Internet Speed
    1Gb Up / 1 Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
    Other Info
    Additional options installed:
    WiFi 6E PCIe adapter
    ASUS ThunderboltEX 4 PCIe adapter
  • Operating System
    Win11 Pro 23H2
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkBook 13x Gen 2
    CPU
    Intel i7-1255U
    Memory
    16 GB
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek® ALC3306-CG codec
    Monitor(s) Displays
    13.3-inch IPS Display
    Screen Resolution
    WQXGA (2560 x 1600)
    Hard Drives
    2 TB 4 x 4 NVMe SSD
    PSU
    USB-C / Thunderbolt 4 Power / Charging
    Mouse
    Buttonless Glass Precision Touchpad
    Keyboard
    Backlit, spill resistant keyboard
    Internet Speed
    1Gb Up / 1Gb Down
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    Edge
    Antivirus
    Windows Defender
    Other Info
    WiFi 6e / Bluetooth 5.1 / Facial Recognition / Fingerprint Sensor / ToF (Time of Flight) Human Presence Sensor
HI,

To identify the application that changes the power plan, open the Windows Events Viewer and filter on event ID 12.
In the example bellow a event was generated after I changed my power plan from the control pannel (Process = Explorer.exe)

1709377124663.png
 

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Memory
    16
And you can see the GUIDs for your power plans by running the command
powercfg /L

Do please note that that EventID 12 is also generated by other causes so checking your power plan GUIDs against those shown in the Event viewer records [as illustrated by zinou] is essential if you are to interpret the events.
Log - System
Source - UserModePowerService
EventID - 12


Just by way of example, I alter some selected power properties using a PowerCFg script and that is recorded as an EventID 12.
In my case, the results are shown as
Process C:\Windows\System32\powercfg.exe (process ID:3388) reset policy scheme from {381b4222-f694-41f0-9685-ff5bb260df2e} to {381b4222-f694-41f0-9685-ff5bb260df2e}
meaning that PowerCfg was used to alter a power property and that
- the active power plan beforehand was GUID
{381b4222-f694-41f0-9685-ff5bb260df2e}
- the active power plan afterwards was GUID
{381b4222-f694-41f0-9685-ff5bb260df2e}
i.e. Balanced power plan before, Balanced power plan afterwards.


It seems to me that the first thing you need to check is whether
- your computer has switched between different power plans
or
- Your computer has changed some properties within the same power plan.
The latter was fairly common in the Windows 7 period. I have not seen it reported for quite some time.


The identity of the process causing the change is also significant.
- ziou's example shows explorer.exe causing the change.
- My example shows PowerCfg.exe causing the change.



Al the best,
Denis
 

My Computer

System One

  • OS
    Windows 11 Home x64 Version 23H2 Build 22631.3447
To identify the application that changes the power plan, open the Windows Events Viewer and filter on event ID 12
Freakin' genius. That allowed me to identify the trouble-maker: It was ASUS AI Suite. Makes perfect sense because I had played with it recently.

Denis, thanks for your suggestions as well. I at least already know that it had changed the power plan. That was not speculation on my part. I said that this is what happened because it was blatantly obvious - the plan was actually set to Power Saver which I NEVER choose on my own. But the info you provided was very helpful, thank you!
 

My Computers

System One System Two

  • OS
    Win11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Intel i7-11700K
    Motherboard
    ASUS Prime Z590-A
    Memory
    128GB Crucial Ballistix 3200MHz DRAM
    Graphics Card(s)
    No GPU - CPU graphics only (for now)
    Sound Card
    Realtek (on motherboard)
    Monitor(s) Displays
    HP Envy 32
    Screen Resolution
    2560 x 1440
    Hard Drives
    1 x 1TB NVMe Gen 4 x 4 SSD
    1 x 2TB NVMe Gen 3 x 4 SSD
    2 x 512GB 2.5" SSDs
    2 x 8TB HD
    PSU
    Corsair HX850i
    Case
    Corsair iCue 5000X RGB
    Cooling
    Noctua NH-D15 chromax.black cooler + 10 case fans
    Keyboard
    CODE backlit mechanical keyboard
    Mouse
    Logitech MX Master 3
    Internet Speed
    1Gb Up / 1 Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
    Other Info
    Additional options installed:
    WiFi 6E PCIe adapter
    ASUS ThunderboltEX 4 PCIe adapter
  • Operating System
    Win11 Pro 23H2
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkBook 13x Gen 2
    CPU
    Intel i7-1255U
    Memory
    16 GB
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek® ALC3306-CG codec
    Monitor(s) Displays
    13.3-inch IPS Display
    Screen Resolution
    WQXGA (2560 x 1600)
    Hard Drives
    2 TB 4 x 4 NVMe SSD
    PSU
    USB-C / Thunderbolt 4 Power / Charging
    Mouse
    Buttonless Glass Precision Touchpad
    Keyboard
    Backlit, spill resistant keyboard
    Internet Speed
    1Gb Up / 1Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
    Other Info
    WiFi 6e / Bluetooth 5.1 / Facial Recognition / Fingerprint Sensor / ToF (Time of Flight) Human Presence Sensor
Freakin' genius. That allowed me to identify the trouble-maker: It was ASUS AI Suite. Makes perfect sense because I had played with it recently.

Denis, thanks for your suggestions as well. I at least already know that it had changed the power plan. That was not speculation on my part. I said that this is what happened because it was blatantly obvious - the plan was actually set to Power Saver which I NEVER choose on my own. But the info you provided was very helpful, thank you!

The exact same thing happened to me when I used AI Suite (I don't use it anymore). Unfortunately, AI Suite changes your power plan based on your fan profile. If Denis hadn't explained it first, I would have suggested checking that first.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom
    CPU
    Ryzen 7
    Motherboard
    ASUS ROG STRIX B-450
    Memory
    32 GB
    Graphics Card(s)
    EVGA GeForce GTX 1050 Ti SC
    Hard Drives
    C: SSD, 500 GB
    D: HDD, 1 TB
    J: HDD, 1 TB
    Antivirus
    Norton

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