04-19-2017 04:43 AM
Well the title says it all...
I updated Windows and brightness is now locked on minimum. Even if I press F12 or go into the settings, the brightness bar will fill but the screen won't show any changes at all.
Sorry if I mispelled anything but I can barely see on this screen due to this issue.
Can someone please enlighten me? Literally.
04-20-2017 01:30 AM
Thanks for using the Lenovo forums.
Try to download the Video and Chipset drivers for the unit from the support page.
Make sure to reboot after an update on the unit.
If that doesn`t work, try to revert back to an older version of Windows and see if that can make a difference.
Hope this helps, let us know how you get on.
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05-19-2017 02:01 PM
I have almost the same problem - the only difference my brightness is not at minimum.
It happened after I have updated Windows 10 to 1703 version.
So as you recomended, I have installed newest Intel _VGA driver from Lenovo support page over my driver. Actually it was the same I had already.
Than I have restarted Windows, but it didn't helped.
My System: Yoga 710 14IKB, ProductNr 80V4
Windows 10 1703,
Monitor PnP driver 21.06.2006 10.0.15063.0
GraficCard driver 11.11.2016 220.127.116.1150
How to solve brightness issue?
06-08-2017 01:09 PM
I have the same issue, but i have a little luck because mine got stuck in the 33%.
Lenovo solve the problem as fast as you can. This is my work PC, and i have to work.
06-09-2017 03:21 PM
In my case, sometimes it behaves as it should and sometimes it doesn't. I'm not sure what makes it go one way or the other since I never did anything. I just kept installing updates hoping one will fix the problem for good.
07-08-2017 04:27 AM
Try generic Intel HD drivers from Intel site. People say sometimes it can cause damage, but my Yoga 500 works fine with generic drivers.
1. Find your processor or graphics card (will give same results) on support page.
2. If you found the drivers, choose .ZIP file so you can install it manually via Device Manager (.exe driver trows an error when you are trying to do so)
3. Go to Device Manager and find Intel HD.
4. Right click and find Update driver > Browse my computer for driver software > Let me pick from a list... > Have Disk.
5. Select folder where you have driver (you need to unpack it)
6. In that folder find "Graphics" and select it.
7. find igfx64.inf or somewhat.
8. Install it.
WARNING: Do it at your own risk! I am not responsible if it causes damage t your device!
01-03-2018 12:14 PM
I am having this issue as well but found a work around.
I uninstalled the current drivers I had and installed the Intel Generic drivers (win64_18.104.22.16801) release date 12/28. Now if you right-click on your desktop and select "Intel Graphics Settings" and then select "Display". Under the "Color Settings" section you can adjust the brightness.
It is not as easy as using the buttons but it does work. I have attached a Word document with the screen shots.