06-27-2014 01:38 AM
For some reason I can't change my screen brightness anymore. I've already tried a HD 4000 driver rollback to version 220.127.116.1123 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.
Solved! Go to Solution.
06-27-2014 07:08 AM
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.
06-28-2014 03:24 AM
I've installed Lenovo Energy Management for Windows 8.1 (32-bit, 64-bit) - Notebook Version: 18.104.22.168. I've tried it with Intel HD Graphics 4000 22.214.171.12423 & 10.18.10.3621 but unfortunately the issue persists.
06-30-2014 01:04 AM
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
07-05-2014 05:33 AM
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 126.96.36.19917)
07-07-2014 03:14 AM
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!
09-28-2014 08:27 AM
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
11-23-2015 06:42 AM - edited 11-23-2015 06:44 AM
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:
3. Select "FeatureTestControl".
3. Change the value from "F000" to "FFFF"