cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Bhongskhie
What's DOS?
Posts: 2
Registered: ‎05-12-2017
Location: PH
Views: 1,791
Message 1 of 4

Lenovo G40-70 Black/blank screen

Hi,

 

I have Lenovo G40-70. When I press the power button the power light is on but the screen is blank or black. I would like to know hoe can I hard reset the CMOS. I tried to remove the memory but no beep or sound produre. Not sure if my motherboard is defective but I want to try first clear cmos. Can anyone help me how can I find any jumper.. or hardaware manual.

 

Regards,

Bhongskhie

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 1,725
Message 2 of 4

Re: Lenovo G40-70 Black/blank screen

Hi there, Bhongskhie -  

 

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

 

To totally clear the CMOS would require opening up the laptop and removing the battery from the motherboard.  Unfortunately this would void any remaining warranty and the motherboard battery on your model is soldered directly to the board.  Without removing the motherboard battery the best you can do is either press and hold the power button for 15 seconds with the charger / adapter unplugged or go into the BIOS Setup and default the settings which is usually performed by pressing the F9 key.  Keep in mind that the removal of the motherboard battery will not remove BIOS passwords like it does with a desktop model.

 

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"

Bhongskhie
What's DOS?
Posts: 2
Registered: ‎05-12-2017
Location: PH
Views: 1,714
Message 3 of 4

Re: Lenovo G40-70 Black/blank screen

Hi Shahi,

 

I already tried this and no luck, the screen still blank. What are other posibilities that I might have? I'm suspecting the video card to be defective since the power light still performing well and blinking when there is activity in the pc.

 

Please help.

 

Regards,

Bhongskhie

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 1,688
Message 4 of 4

Re: Lenovo G40-70 Black/blank screen

I would suggest please call our Customer Service hotline for assistance regarding your issue or else doing anything would void the warranty.

 

Schedule a Call-back for faster support

English 24 hours a day 7 days/week 

During business hours, you may also engage with live chat support.

 

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"

Check out current deals!


Shop current deals

Top Kudoed Authors