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TesIa
Paper Tape
Posts: 5
Registered: ‎01-25-2017
Location: US
Views: 2,729
Message 1 of 10

Lenovo Y40 - 70 Screen Flicker on Battery

Hi,

 

My Lenovo Y40-70 (Windows 10) flickers on battery. I purchased a new battery, thinking this would fix the issue, but it did not. When I connect my computer to a second screen, the laptop screen flickers but the second screen does not. Usually the battery goes to about 90% with minimal flickering, but then it gets pretty back by flashing at 1 second intervals.

 

So far I have done the following:

 

- Checked the display cable connection to the LCD panel. 

- Cleaned the laptop insides and made sure that all cables were sufficiently connected (as far as I can tell). 

- Reset all power options to default. Interestingly, when my disk usage goes up - the flickering increases. When it idles at about 3 - 5% it flickers, but just less frequently. I have disabled windows search and superfetch too.

- Updated all GPU drivers. I have an Intel one and a AMD Radeon one. 

 

Any help would be appreciated. 

 

Thanks.

 

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 2,679
Message 2 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

Hi there, Telsa -

 

Thank you for writing in to the Lenovo Forum - happy to have you here today.

 

Can you try the following?

 

  1. Right click on the desktop and navigate to Graphics Properties > Power > On Battery and set the following settings:

   Power Plans = Maximum Performance

   Display Power Saving Technology = Off

   - Sample image

 

  1. Follow this guide on how to disable adaptive brightness.

 

Update us how it goes.          

 

 

 

 

 

Regards,

 

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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! 

TesIa
Paper Tape
Posts: 5
Registered: ‎01-25-2017
Location: US
Views: 2,672
Message 3 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

Hi,

Thanks for your response. The suggested solution did not work unfortunately.
Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 2,668
Message 4 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

Does the external display produce the same problem?

Also, you can also start by flushing out all static, remove battery and AC adaptor and hold down power button for about 15 seconds.

 

Update us how it goes.

 

 

 

 

Regards,

 

Tap that kudos button if I helped 
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! 

TesIa
Paper Tape
Posts: 5
Registered: ‎01-25-2017
Location: US
Views: 2,633
Message 5 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

The external display - the second screen - won't flicker but the laptop will. I have drained the computer of all static. It still flickers.

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 2,627
Message 6 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

Check the output frequencies the monitor/display is getting? Set the Screen Refresh Rate to 50 Hertz. After applying these settings.

 

Update us how it goes.

 

 

 

Regards,         

 

Tap that kudos button if I helped 
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"

TesIa
Paper Tape
Posts: 5
Registered: ‎01-25-2017
Location: US
Views: 2,625
Message 7 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

It says 60hz for refresh rate in the Intel HD Graphics Control. If I try to set a custom resolution and change it to 50hz, it says the custom resolution exceeds the current bandwidth.
TesIa
Paper Tape
Posts: 5
Registered: ‎01-25-2017
Location: US
Views: 2,542
Message 8 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

Hi Shashi_Lenovo,

Just wanted to thank you for your help. After exhausting options, I went ahead and bought/replaced my screen. Problem fixed. I figured this was the issue since I would plug it into a second screen. The second screen did not flicker and I could blackout my first screen and run off battery power fine.
Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 2,538
Message 9 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

Great that all goes well.Smiley Happy

Please feel free to utilize our forums at any time.

 

 

 

 

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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!

cedenoaugusto1
Paper Tape
Posts: 4
Registered: ‎02-17-2017
Location: CL
Views: 661
Message 10 of 10

Re: Lenovo Y40 - 70 Screen Flicker on Battery

I have same issue, but just occurs when unplugged charger and works with battery, just then start flickering.

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