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Daveman
Blue Screen Again
Posts: 4
Registered: ‎06-27-2014
Location: Germany
Views: 2,256
Message 1 of 8

Can't change screen brightness anymore - U410

For some reason I can't change my screen brightness anymore. I've already tried a HD 4000 driver rollback to version 9.17.10.3223 and I also disabled "adaptive screen brightness" at the power management. For some reason I can change the brightness by using the "microsoft basic display adapter" driver instead of the HD 4000 but that isn't a real solution.

Retired Support Specialist
Posts: 2,826
Registered: ‎08-01-2013
Location: Bangalore
Views: 2,239
Message 2 of 8

Re: Can't change screen brightness anymore - U410

Hi Daveman,

 

Welcome to Lenovo Community!

 

I’m sorry to hear that the Brightness Feature is not working as expected in your U410 Laptop, I suggest you to re-install LEM (Lenovo Energy Management) in the computer from our support website.

 

Do post us back if the issue persists.

 

Best Regards

Shiva Kumar



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Daveman
Blue Screen Again
Posts: 4
Registered: ‎06-27-2014
Location: Germany
Views: 2,223
Message 3 of 8

Re: Can't change screen brightness anymore - U410

I've installed Lenovo Energy Management for Windows 8.1 (32-bit, 64-bit) - Notebook Version: 8.0.2.20. I've tried it with Intel HD Graphics 4000 9.17.10.3223 & 10.18.10.3621 but unfortunately the issue persists.

Retired Support Specialist
Posts: 2,826
Registered: ‎08-01-2013
Location: Bangalore
Views: 2,197
Message 4 of 8

Re: Can't change screen brightness anymore - U410

Hi Daveman,

 

As the issue persists even after re-installing the Display driver & LEM, the only available option to check this issue if it’s Hardware related is by performing OSRI (Operating System Re-Install). Please let me know if the issue persists.

 

NOTE: Please backup the data in the computer before performing OSRI, as the data will be completely erased.

 

Hope to hear back soon

 

Best Regards

Shiva Kumar



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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Daveman
Blue Screen Again
Posts: 4
Registered: ‎06-27-2014
Location: Germany
Views: 2,157
Message 5 of 8

Re: Can't change screen brightness anymore - U410

I could solve the problem by installing Intel VGA Driver for Microsoft Windows 8 (32-bit, 64-bit) - IdeaPad U310, U310 Touch, U410, U410 Touch (driver version 9.17.10.2817)

Retired Support Specialist
Posts: 2,826
Registered: ‎08-01-2013
Location: Bangalore
Views: 1,930
Message 6 of 8

Re: Can't change screen brightness anymore - U410

Hi Daveman,

 

I’m glad to hear that the issue is resolved after re-installing the Display driver. Please feel free to post in Lenovo Community Forums if you have any further queries!

 

Cheers!Smiley Happy

 

Best Regards

Shiva Kumar



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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fellyfelicia
What's DOS?
Posts: 1
Registered: ‎09-28-2014
Views: 1,556
Message 7 of 8

Re: Can't change screen brightness anymore - U410

how about in windows 7? my Lenovo Ideapad U410 doesn't change the brightness when I slide the screen brightness on the control panel. i only use the function key everytime it start up. because everytime i turn on my laptop, the brightness is very low. please help me. thank you

Daveman
Blue Screen Again
Posts: 4
Registered: ‎06-27-2014
Location: Germany
Views: 876
Message 8 of 8

Betreff: Can't change screen brightness anymore - U410

Update:

I could solve the problem, while using new drivers, by changing a registry entry. This works also with Windows 10.

 

1. Open "regedit"

2. Go to this folder: 

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001

3. Select "FeatureTestControl".

3. Change the value from "F000" to "FFFF"

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