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05-25-2020

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Yoga C940: Black, Flickering Horizontal Lines at Top of Screen

2020-05-25, 6:41 AM

I just bought a new Yoga C940 (manufacture date 20/01/28) through Best Buy and I am having this issue within the first week of using it. 

There are 2-3 black, horizontal lines that flicker in the region where tabs are located on an internet browser. The lines are not consistent, instead they flicker then disappear until they are triggered again. They tend to appear when I am switching apps in tablet mode. 

 

My laptop is up to date. I am very gentle with my laptop and do not believe it was caused by any physical damage by me.

 

I am looking for ways I may troubleshoot this, and if I must send it in for repairs. I do not have the added GeekSquad protection that can be purchased; however, if I am not mistaken this did come with a standard manufacturers warranty that new laptops come with (haven't applied it yet).

 

Thank you for any help. I do not want this to evolve into a larger issue (such as the lines always being there, or other underlying issues).

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11-30-2015

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Re:Yoga C940: Black, Flickering Horizontal Lines at Top of Screen

2020-05-25, 14:18 PM

Hi arryan798,

 

Welcome to the Community Forums.

 

After having both BIOS and drivers updated, I suggest you try the steps on this guideline.

 

If this would not work for you, then try calling in technical support or chat.

 

They would be able to get you options and case number to either have Best Buy work on it (under OEM warranty) or get it sent for repair to the depot.

 

I hope this helps answer your query.

 

Update us how things go.

 

Regards

 



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137 Posts

12-08-2019

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Yoga C940: Black, Flickering Horizontal Lines at Top of Screen

2020-05-25, 16:48 PM
Do they look anything similar to mine by any chance? Post a pic if you can. https://www.reddit.com/r/Lenovo/comments/g2r03c/c940_screen_bug_final_update_high_temperatures/
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2 Posts

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Re:Yoga C940: Black, Flickering Horizontal Lines at Top of Screen

2020-05-25, 23:45 PM
Oh boy, no nothing like what you experienced. This is what I have been having happen to me. It flickers on and off again like a blink
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Re:Yoga C940: Black, Flickering Horizontal Lines at Top of Screen

2020-05-25, 23:48 PM
I will try this! Also I added a picture for reference and more context if that helps more
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Re:Yoga C940: Black, Flickering Horizontal Lines at Top of Screen

2020-05-29, 8:59 AM
I'd contact support on it then like Spidey mentioned above. Lenovo support could probably get it for you fixed.
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