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name_here
Punch Card
Posts: 9
Registered: ‎04-11-2017
Location: US
Views: 37,305
Message 1 of 9

Lenovo Yoga 720: Can't adjust brightness setting!

Need help. Lenovo Yoga 720 can only be at brightest setting. The brightness button doesn't work anymore and neither does the brightness in settings.

Highlighted
Support Specialist
Posts: 2,948
Registered: ‎02-22-2017
Location: GB
Views: 37,208
Message 2 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

Hello Name_here

Thanks for using the Lenovo forums.


Have you made any changes recently to the system that could`ve potentially caused this? recent updates, downloads etc.

 

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.

Hope this helps, let us know how you get on.


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Pesszimistának lenni a legjobb, vagy igazad van, vagy kellemesen meglepődsz...
name_here
Punch Card
Posts: 9
Registered: ‎04-11-2017
Location: US
Views: 37,203
Message 3 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

the support page doesn't have much on lenovo yoga 720, but I called tech support.

 

A support specialist named Amber, sweet voice helped me solved the problem.

 

The Novo button next to the audio jack. I didn't have a paper clip, so I used a 0.8 needle-like screw driver but it was only 0.7mm long. It didn't do anything. I used a .75mm rosin core solder and poked the button. Who knew it would be so deep!

 

I went to bios, F9, F10 and Voila! The brightness worked again!

 

I'm relieved that I didn't have to send it in or factory restore it. It's such a hassle.

 

I don't know why the problem happened, but now I know how to troubleshoot it. Thanks Amber! and to you Krakken for the reply help.

Brotu
What's DOS?
Posts: 1
Registered: ‎08-28-2017
Location: US
Views: 35,498
Message 4 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

Hi Punch Card! I'm having the exact same problem. When you entered bios, did you navigate to a specific page? Or did you only have to eter it, hit F9 then F10, restart, and you were able to adjust the brightness again? Thanks for sharing your solution and success!

COOLEE
What's DOS?
Posts: 1
Registered: ‎11-21-2017
Location: US
Views: 30,247
Message 5 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

I have the same problem several times after upgrading my 710 IKB 15 inch Yoga.

Indeed the woking solution here is to power down the laptop

Next push the little pinpoint tab next to the Headphones Jack

The computer will start up in BIOS

F9 commands to start up with original setting and will not affect your updates in Windows

Last exit with F10 command.

Restart the laptop and Brightness will work again as before. 

Note. By going into the HD graphic settings under color. you can spice up to more brightness even afterwards.

Under the tab settings (the ones like airplane mode there is also a nightlight button that will bring your computer close to the former paper white setting that is ideal for prolonged work and typing on the machine

Hope this will help many users.

COOLEE

 

79Bones
What's DOS?
Posts: 2
Registered: ‎09-16-2018
Location: US
Views: 11,558
Message 6 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

I have a Lenovo 720...tried the solution, brightness levels still cannot be changed! Please help.

lavanyanaren82
What's DOS?
Posts: 2
Registered: ‎09-16-2018
Location: US
Views: 11,414
Message 7 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

This is not working for me. Any ideas???

lavanyanaren82
What's DOS?
Posts: 2
Registered: ‎09-16-2018
Location: US
Views: 11,411
Message 8 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

Solved! Went into Device Manager --> Monitor --> Right click on the monitor and update driver automatically and also a Windows update solved it.
79Bones
What's DOS?
Posts: 2
Registered: ‎09-16-2018
Location: US
Views: 11,287
Message 9 of 9

Re: Lenovo Yoga 720: Can't adjust brightness setting!

Solved! Following the advice provided, I installed an Intel display Update located on Windows Update.

 

go to  Device Manager > Monitor > (right click) genric non-PNP monitor

 

Select Update automatically...

Windows pop-up said "best driver already installed ... try Windows Updates for another driver..."

Click Windows Update

Two updates were available: Windows 10 & Intel (both installed automatically)

Started working as soon as install completed 

 

Thank you for the help!

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