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Blue Screen Again
Posts: 3
Registered: ‎03-18-2018
Location: PL
Views: 2,393
Message 1 of 5

Lenovo y700 - 15ISK black screen

I was going on a train, so i turned off my laptop to get it in my backpack. When i tried to boot it in the train, the screen was not turning on. It stayed like that. I've tried many things (battery drain, bios update and else) but it just doesn't work. I can plug in an external monitor an it is just fine. I'm just reminding you that the screen is OFF, it doesn't show anything through the bootup and in the windows. The external monitor is considered as a main one, and i can go to bios through it. I really don't know what happened, and i couldn't find any way to fix it in the internet. So i ask, do you know the problem ? If yes, then can i do something besides just sending it to service ? It looks like my warranty worn out january this year. 

Support Specialist
Posts: 2,948
Registered: ‎02-22-2017
Location: GB
Views: 2,322
Message 2 of 5

Re: Lenovo y700 - 15ISK black screen

Hello 8odzio

Thanks for using the Lenovo forums.

By the sounds of it, it sounds like there will be an issue with the connection on the unit, if the screen is refusing to turn on even in the BIOS.

It`s possible that something got damaged, likely the connection cable along the hinges of the unit, or at least that is what I would suspect.


The support line may be able to to offer an out of warranty repair service for you. You would have to check with them.

Below is the link to the phone list where you can find these numbers

Otherwise, the only other thing you can really do is open up the unit yourself anc check what could be loose/damaged.





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

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Pesszimistának lenni a legjobb, vagy igazad van, vagy kellemesen meglepődsz...
Posts: 239
Registered: ‎08-21-2016
Location: US
Views: 2,307
Message 3 of 5

Re: Lenovo y700 - 15ISK black screen

Can you try pressing Fn-F2 to switch backlight on? Maybe it got switched off accidentally.


Otherwise, is the screen really completely dark (no output), or still showing some picture, just without the backlight? If it's the latter, it will be noticeable at a certain angle, particularly when the picture is changing. This simple utility can help make it more apparent by cycling different colors on the screen:


Blue Screen Again
Posts: 3
Registered: ‎03-18-2018
Location: PL
Views: 2,299
Message 4 of 5

Re: Lenovo y700 - 15ISK black screen

So i checked the monitor connector, and it looks like it was busted. Sadly i have another problem now. I've removed it and i can't turn on the laptop anymore. I mean the power icon lights up and the leds on the side of the laptop light up. No other signs of laptop powering on though. No fans, no image (even with an ext monitor) etc. Did i do something to the motherboard then, or is just it not working because of the missing connector ?? I did battery drains few times, was trying to reboot it and else. Nothing's working and i'm starting to get worried. I also don't know when i'll get the new cable.

Blue Screen Again
Posts: 3
Registered: ‎03-18-2018
Location: PL
Views: 2,298
Message 5 of 5

Re: Lenovo y700 - 15ISK black screen

I already checked it, looks like a busted monitor connector.

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