English Community

Lenovo NotebooksLenovo B and G Series Notebooks
All Forum Topics
Options

6 Posts

11-15-2018

BR

14 Signins

89 Page Views

  • Posts: 6
  • Registered: ‎11-15-2018
  • Location: BR
  • Views: 89
  • Message 1 of 10

Lenovo G40-80 screen backlight won't turn on

2018-11-15, 1:36 AM

Hello everyone,

Last week's Wednesday I used my Lenovo G40-80 to do my college homework at the afternoon. It went all normally, I turned off the notebook and get to my college.

At night, when I returned, I tried to turn on the notebook and was given the error when the system don't booted and both the led aside the camera and the fan turned on for almost two seconds and then turned off. 

After many attempts, and seeing some topics here, I tried to turn on my Lenovo using the recovery button. It worked,the system booted up normally. Problem is that the system gave video, but LCD backlight is off.

I am very anxious about the possibility of being a software problem, giving the fact that the F9 key has a feature similar to the problem i'm suffering (LCD backlight on/off) and also the fact that if I connect my laptop into a TV or another screen via HDMI/Vga cables, video is showed nornally.

 

I've done a video showing my problem and uploaded it on YouTube, here's the link:

https://youtu.be/deGQw-88x68

 

Please, do someone has any answers to this problem? I have urgency to return using my computer, in order to continue to do my homeworks.

 

Thanks in advance.

Reply
Options

6 Posts

11-15-2018

BR

14 Signins

89 Page Views

  • Posts: 6
  • Registered: ‎11-15-2018
  • Location: BR
  • Views: 89
  • Message 2 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 12:25 PM
Hello, I've tried both ways a number of times when the problem come in, but unfortunately didn't worked. Brightness is in maximum and F9 key does not give effect.
Reply
Options

733 Posts

08-02-2018

US

411 Signins

10354 Page Views

  • Posts: 733
  • Registered: ‎08-02-2018
  • Location: US
  • Views: 10354
  • Message 3 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 12:44 PM

Please try updating the display driver and the BIOS. You may download the display driver and BIOS update here: https://support.lenovo.com/us/en 

Update us how it goes. 



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Follow @LenovoForums on Twitter!

Reply
Options

6 Posts

11-15-2018

BR

14 Signins

89 Page Views

  • Posts: 6
  • Registered: ‎11-15-2018
  • Location: BR
  • Views: 89
  • Message 4 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 14:51 PM

Hello, link is not working, I got a 404 error. Am I doing something wrong?

Reply
Options

184 Posts

08-01-2018

PH

26 Signins

144 Page Views

  • Posts: 184
  • Registered: ‎08-01-2018
  • Location: PH
  • Views: 144
  • Message 5 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 16:07 PM

Sorry about that. could you try this link/url instead https://support.lenovo.com/us/en/



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Follow us @LenovoSupport on Facebook and Twitter!

Reply
Options

6 Posts

11-15-2018

BR

14 Signins

89 Page Views

  • Posts: 6
  • Registered: ‎11-15-2018
  • Location: BR
  • Views: 89
  • Message 6 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 16:11 PM

Ok, I've tried updating the bios and video driver by downloading them from Lenovo G40-80 page, bios is updated and ok by now. unfortunately, problem persists. However, the video driver gave me trouble: I downloaded and installed but was gave an error message from Intel saying driver is not validated for my system. problem is the OS is the original, that come in with my notebook (Windows 10 Pro).

 

Reply
Options

7720 Posts

01-13-2008

US

76840 Signins

2154333 Page Views

  • Posts: 7720
  • Registered: ‎01-13-2008
  • Location: US
  • Views: 2154333
  • Message 7 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 8:52 AM

The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

Communities: English Deutsch Español Português Русскоязычное Česká Slovenská Українська Polski Türkçe Moto English

Reply
Options

165 Posts

08-02-2018

US

182 Signins

870 Page Views

  • Posts: 165
  • Registered: ‎08-02-2018
  • Location: US
  • Views: 870
  • Message 8 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 18:57 PM

Just to confirm, is the screen already dimmed whenever you boot the laptop into Windows? if yes, this is a not a software issue but more of a hardware problem with the LCD. You may contact our technical support for repair options.

 

Regards,



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Follow us @LenovoSupport on Facebook and Twitter!

Reply
Options

6 Posts

11-15-2018

BR

14 Signins

89 Page Views

  • Posts: 6
  • Registered: ‎11-15-2018
  • Location: BR
  • Views: 89
  • Message 9 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-15, 20:28 PM

Yes, I've already contacted technical assistance in order to solve this - and another - problems. Unfortunately this entanglement was late and I needed to take my notebook again to my use. However, the technicians ensured me that this might be a software problem.

 

There's no other solution? I can't afford by now getting far from my computer due to my college homeworks.

Reply
Options

402 Posts

08-02-2018

US

163 Signins

956 Page Views

  • Posts: 402
  • Registered: ‎08-02-2018
  • Location: US
  • Views: 956
  • Message 10 of 10

Re: Lenovo G40-80 screen backlight won't turn on

2018-11-16, 7:43 AM

To verify if this is hardware or software, boot it in BIOS and check if the screen is still dim. If it is, then it is hardware issue. Steps here, https://support.lenovo.com/us/en/solutions/ht500216.



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Follow us @LenovoSupport on Facebook and Twitter!

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save