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okutue
Paper Tape
Posts: 10
Registered: ‎10-18-2015
Location: Nigeria
Views: 7,841
Message 1 of 8

Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Help pls i upgraded my ideapad 100 from windows 8.1 to windows 10 and since then anytime i startup the system from shutdown the brightnes control becomes inverse(ie increasing the brightness reduces the screen brightness and vice versa) but if i restart the system it works normally and also if i disable and enable the Intel HD graphics from device manager it works properly.

But since i will be using the shut down and startup option more frequently than the restart i dont know if there is any fix for this.

Retired Support Specialist
Posts: 734
Registered: ‎08-24-2015
Location: Egypt
Views: 7,817
Message 2 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Dear okutue,

 

Welcome in lenovo community,

 

Please try to uninstall the graphic driver from the device manager >> then restart the laptop >> right click the graphic driver from the device manager >> Update driver software.

 

Regards,

Joseph

okutue
Paper Tape
Posts: 10
Registered: ‎10-18-2015
Location: Nigeria
Views: 7,768
Message 3 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Hello Joseph

I have tried the solution you mentioned above but it didnt fix it.

After searching google for the solution, i found out that the problem is unique to Intel Pentium N3540 Processor and it HD Graphics Adapter.

 

The best fix i found was to Turn Off Windows Fast Boot Option so that windows can load the driver properly

And i really want to turn back on this fast boot option

Retired Support Specialist
Posts: 734
Registered: ‎08-24-2015
Location: Egypt
Views: 7,782
Message 4 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Dear okutue,

 

Please try to install the below drivers,

 

VGA Driver,

 

https://download.lenovo.com/consumer/mobiles/7jn601af.exe

 

Power Management,

 

https://download.lenovo.com/consumer/mobiles/wwed010e.exe

 

Regards,

Joseph

okutue
Paper Tape
Posts: 10
Registered: ‎10-18-2015
Location: Nigeria
Views: 7,763
Message 5 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Its still not working after installing those drivers
Retired Support Specialist
Posts: 734
Registered: ‎08-24-2015
Location: Egypt
Views: 7,739
Message 6 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Dear okutue,

 

Please try to install the Chipset Driver,

 

https://download.lenovo.com/consumer/mobiles/7jn801af.exe

 

Intel MBI Driver,

 

https://download.lenovo.com/consumer/mobiles/7jn501af.exe

 

Intel TXEI Driver,

 

https://download.lenovo.com/consumer/mobiles/7jn701af.exe

 

Regards,

Joseph

 

okutue
Paper Tape
Posts: 10
Registered: ‎10-18-2015
Location: Nigeria
Views: 7,704
Message 7 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Its working now thanks..

I had to install all drivers from the lenovo windows driver update page for windows 10 and it finally worked.

wcoxohio
What's DOS?
Posts: 1
Registered: ‎10-14-2017
Location: US
Views: 3,108
Message 8 of 8

Re: Lenovo Ideapad 100: Reverse brightness control after Windows 10 Upgrade

Updating the driver didn't help me.  I saw a video on Youtube that discribed this as a Registry issue.  You go to your search bar by the start button and type in 'regedit'.  A screen shows up with a long file that starts with 'computer'.  You click on the icon to the left of 'computer' and now the screen just says 'computer'.  You then go to 'find' and type in 'FeatureTestControl'.  After a minute or two, the computer finds 'FeatureTestControl'. You click on this and a box comes up to change the value.  In the video, the found value was 'FFFF'.  On my laptop, it was 'f000'.  You change the value to 'ffff' and hit enter.  After a reboot, my brightness controls worked as they should.

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