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How to Start/Stop
Adaptive Brightness service
Description Services Regedit Back CMD Msconfig
Service name: SensrSvc
Display name: Adaptive Brightness

Description:
Monitors ambient light sensors to detect changes in ambient light and adjust the display brightness.  If this
service is stopped or disabled, the display brightness will not adapt to lighting conditions.

Path to executable:
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
Type services.msc and press Enter
Services.msc:
This method shows you how to Start/Stop Adaptive Brightness from Services.msc
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Locate Adaptive Brightness observe his current status and open to make changes.
From General tab you can Start/Stop and change the Startup type of Adaptive Brightness

To finish press ok button and close Services window
Type regedit and press Enter
Please confirm User Account Control pop-up
Microsoft official disclaimer

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by
using another method. These problems might require that you reinstall the operating system. Microsoft
cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Please navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SensrSvc and locate
Start registry key
Regedit:          
This method shows you how to change Startup type of  Adaptive Brightness from Registry Editor
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Double click on Start and edit the value:

Change Startup type :

Automatic - 2
Manual - 3
Disabled - 4
Automatic (Delayed Start) - 2

Note: When you change to Automatic (Delayed Start) a new key DelayedAutostart is created with value 1.
When you change to Automatic from Automatic (Delayed Start), DelayedAutostart change value to 0.
Type cmd, right click on cmd icon under the Programs and click on Run as administrator
Please confirm User Account Control pop-up
Please select, right and copy a registry key from below, then right click on command prompt window
, select Paste and press Enter

To Start Adaptive Brightness:

net start SensrSvc

Note: You can’t start a service if Startup type is on Disabled.

To Stop Adaptive Brightness:

net stop SensrSvc

To change Startup type:

Automatic:
REG add "HKLM\SYSTEM\CurrentControlSet\services\SensrSvc" /v Start /t REG_DWORD /d 2 /f

Manual:
REG add "HKLM\SYSTEM\CurrentControlSet\services\SensrSvc" /v Start /t REG_DWORD /d 3 /f

Disabled:
REG add "HKLM\SYSTEM\CurrentControlSet\services\SensrSvc" /v Start /t REG_DWORD /d 4 /f

Automatic (Delayed Start):
REG add "HKLM\SYSTEM\CurrentControlSet\services\SensrSvc" /v Start /t REG_DWORD /d 2 /f

Note: When you change to Automatic (Delayed Start) a new key DelayedAutostart is created with value 1.
REG add "HKLM\SYSTEM\CurrentControlSet\services\SensrSvc" /v DelayedAutostart /t REG_DWORD /d 1 /f

When you change to Automatic from Automatic (Delayed Start), DelayedAutostart change value to 0.
REG add "HKLM\SYSTEM\CurrentControlSet\services\SensrSvc" /v DelayedAutostart /t REG_DWORD /d 0 /f
CMD:          
This method shows you how to Start/Stop and change Startup type of Adaptive Brightness from
Command Prompt
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Msconfig:          
This method shows you how to prevent Adaptive Brightness service from starting with the
operating system using System Configuration (msconfig.exe)
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Write msconfig and press Enter
In System Configuration please go to Services tab and locate Adaptive Brightness. Uncheck the
box to prevent this service to start and then press OK to finish.  
Any change make in System Configuration will be apply after restart.  
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