Windows 10: [Dell XPS L521X][Windows 10 21H1] Laptop suddenly shutting down while using

Dear team,My laptop suddenly shutting down while using, it happen sometimes and I don't know exactly when it happen. It happen 1 or 2 times per day.Some informations:Laptop model: Dell XPS L521XWindows 10 21H1 64 bit, OS Build: 19043.1165System Log:- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">- <System> <Provider Name="EventLog" /> <EventID Qualifiers="32768">6008</EventID> <Version>0</Version> <Level>2</Level> &n

:)

 

Loss of brightness control / Intel HD Graphics 4000 / DELL XPS 15 L521X

Hello,

This thread will explain in a few steps how to fix the loss of brightness control with Windows 10 updates (Redstone / Creator Update etc.).

Version Control : thread updated on 31/01/2018 (dd-mm-yyyy)

This problem was first encountered when I updated my system from Windows 8.1 to Windows 10.

This post is an updated version of the following one : Loss of brightness control / Intel HD Graphics 4000

Symptom :

• "I have a XPS 15 (L521X, Mid 2012), originally shipped with Windows 8. I upgraded to Windows 10 and I lost the ability to adjust the brightness of my screen"
• "This problem is recurrent and occurs on each yearly update of Windows 10"

Impacted hardware, drivers and operating system :

• Windows 10 Pro Genuine (Microsoft Windows [version 10.0.16299.192])
• Dell XPS 15 L521X
• Intel(r) HD Graphics 4000 w/ driver "10.18.10.4885"
• NVIDIA GT 640M

Fix:

• Update your Intel drivers : Intel® Graphics Driver for Windows* [15.33] ( Version: 15.33.46.4885 (Latest) Date: 1/3/2018 ) at https://downloadcenter.intel.com/download/27417/Intel-Graphics-Driver-for-Windows-15-33-?v=t
• Download / Install / Reboot
• With "regedit.exe" update the key (create if it doesn't exists) [see below for a ready-to-use file] :
  
  [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000]
  
  "FeatureTestControl" with dword32 , hex value : "f008"
• Same operation, add / update the following key :
  
  [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001]
  
  "FeatureTestControl" with dword32 , hex value : "f008"
• Update registry keys / Reboot
• Update your GT640M Drivers with nVidia support site (I'm using version
  23.21.23.9077)
• Reboot / Enjoy !
  
  

Registry file : Loss of brightness control / Intel HD Graphics 4000 / DELL X - Pastebin.com

Source : this method is inspired by the one described by John and Robin Reynolds

I hope this post will you troubleshooting this weird bug from intel graphics.

Best Regards,

Nikita

 

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Windows 10 Home Version 1803, OS build 17134.765

 

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