Solved My laptop screen brightness always goes to 0% when not plugged in as soon as the battery hits 30%...can't disable


djsubtronic

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Local time
7:48 PM
Posts
8
OS
Windows 11
Whenever I am on battery power, the screen brightness immediately drops to zero as soon as the battery reaches 30%. I can set the brightness back to 100%, plug it in for a second, and unplug again, and it will immediately drop back to 0% brightness.
  • Power saver is not enabled
  • No third party brightness/power utilities
  • There's nothing in advanced power plan settings about dimming etc
  • I have tried using the command "powercfg /setdcvalueindex SCHEME_CURRENT SUB_ENERGYSAVER ESBRIGHTNESS 0" but makes no difference
Any ideas what may be causing this and how I can fix it?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    Clevo PC50DR
    CPU
    Intel i7-10870H
    Memory
    32 GB 2966 MHz
    Graphics Card(s)
    Nvidia RTX 3070
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 1 TB 970 EVO
    Samsung 2 TB 970 EVO

djsubtronic

Member
Thread Starter
Local time
7:48 PM
Posts
8
OS
Windows 11
Nevermind ... after this was bugging me for weeks I finally had a moment of realisation right after posting this that it was a BIOS setting called "power saver" that needed be disabled.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    Clevo PC50DR
    CPU
    Intel i7-10870H
    Memory
    32 GB 2966 MHz
    Graphics Card(s)
    Nvidia RTX 3070
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 1 TB 970 EVO
    Samsung 2 TB 970 EVO

Ed Tittel

Well-known member
MVP
Member
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Local time
1:48 PM
Posts
214
OS
Windows 11
@djsubtronic: Thanks for sharing your fix. It's vital to let other people know when you find (and fix) your issues, because they can do the same thing, too should the need arise. Thanks again,
=Ed=
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo X380 Yoga
    CPU
    i7-8650U (8th Gen/Kaby Lake)
    Motherboard
    20LH000MUS (U3E1)
    Memory
    16 GB
    Graphics Card(s)
    Intel UHD Graphics 620
    Sound Card
    Integrated Conexant SmartAudio HD
    Monitor(s) Displays
    FlexView Display
    Screen Resolution
    1920x1080
    Hard Drives
    Toshiba 1 TB PCIe x3 NVMe SSD
    external 5TB Seagate USB-C attached HDD
    PSU
    Lenovo integrated 65W power brick
    Case
    Laptop
    Cooling
    Laptop
    Keyboard
    Integrated Lenovo ThinkPad keyboard
    Mouse
    touchscreen, touchpad
    Internet Speed
    GbE (Spectrum/Charter)
    Browser
    all of em
    Antivirus
    Defender
    Other Info
    Purchased early 2019 as Windows Insider test PC
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