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3 Posts

12-08-2019

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yoga 900- power button and screen not working but external screen works

2019-12-08, 20:25 PM

power button on my yoga 900 stopped working, but I am able to turn on by pressing the tiny concave button next to the power button (I dont know what it is called) with something pointed. Also the screen does not work, I can hear the laptop turned on and working (fan noise, etc) but the screen is all black. However, when I plug an external monitor, the external monitor works. Any idea where the issue may be?

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733 Posts

08-02-2018

US

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Re: yoga 900- power button and screen not working but external screen works

2019-12-09, 11:15 AM

Hi ,

 

Welcome to the Community Forums.

 

Is there any physical damaged on the power button? Is it stuck? If the laptop does not turn on using the power button, then the power button is defective and needs replacement. 

 

Regarding the screen, try to rollback the display driver in device manager. Here are the steps. 

1. Open device manager (Windows + X > device manager)

2. Expand Display adapters

3. Right click INTEL/NVIDIA/AMD then select properties.

4. Select Drivers Tab. 

5. Rollback the driver if available. If not, uninstall the driver

6. Put a check on delete software driver if prompted.

7. Restart the laptop. 

 

Let us know how it goes.

Auxen



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3 Posts

12-08-2019

US

7 Signins

61 Page Views

  • Posts: 3
  • Registered: ‎12-08-2019
  • Location: US
  • Views: 61
  • Message 3 of 4

Re: yoga 900- power button and screen not working but external screen works

2019-12-09, 17:25 PM

I did the driver uninstall as instructed in the steps, but nothing changed. It still works (luckily) on external monitor but not on the laptop monitor. any other suggestions? When I scannned with Lenovo diagnostics, all parts were checks as OK except for sensor hub had issues. Could the issue be there?  

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3 Posts

12-08-2019

US

7 Signins

61 Page Views

  • Posts: 3
  • Registered: ‎12-08-2019
  • Location: US
  • Views: 61
  • Message 4 of 4

Re: yoga 900- power button and screen not working but external screen works

2019-12-10, 16:33 PM

any other advice?

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