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09-16-2020

NP

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BIOS Recovery

2020-09-16, 7:17 AM

Recently, as I was updating BIOS of  my Lenovo ideapad s145-15iwl, during the process something went wrong and now there is only black screen. The computer can not boot.

 

Now, is there any way around to recover my BIOS?

 

Thanks for help!

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865 Posts

03-11-2020

NO

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Re:BIOS Recovery

2020-09-16, 10:04 AM

@ dpacharya wrote:
 

 

Recently, as I was updating BIOS of  my Lenovo ideapad s145-15iwl, during the process something went wrong and now there is only black screen. The computer can not boot.

 

Now, is there any way around to recover my BIOS?

 

Thanks for help!

 

 

Hi dpacharya, 

 

Welcome to the Community Forums.

 

BIOS updates are crucial updates, but not always needed. Good rule of thumb is: If it is not broken, don't fix it. They are also the most volatile ones if they go wrong. Normally a BIOS update will take around an hour to complete. Which is why the general rule of thumb to go by is that the AC adapter always needs to be plugged in, and the battery needs to be at least 30% charged before beginning the update.

If at any point during the update it gets interrupted. F.ex : There's a power shortage in the house, or the AC adapter wasn't plugged in or there was not enough battery charged for it to finish, then it can risk serious damage to the device. This is what's called a bricked computer that will most likely be needing a repair.

In the event the BIOS update finishes the update, and something has gone wrong, or the BIOS update failed during the update so that it black screens, it can most often then not be fixed by doing a hard reboot/cold boot.

 

Step 1. Hard Reboot + Static Discharge

  • Remove all cables attached to the device (power, hdmi, external mouse/keyboard, etc)
  • Press and hold the power button for 5-10 seconds, until the device turns itself off.
  • Ensure device is switched OFF
  • Hold down power button for 40 seconds
  • Wait aprox. 20 sec
  • Connect the AC adapter, then let the device charge for 2 minutes before starting it back up.

 

Step 2. Try to boot it through Recovery.

  • Make sure the device is switched OFF
  • Press the Novo Button (If IdeaPad/Yoga/Legion)

If device does not have a Novo Button:

  • - Perform a restart while the computer is booting 3 times in a row.
  • - On the 4th boot, see if it will enter Advanced Startup Options.

 

Step 3. Open the device and physically flash the BIOS by removing the Lithium Battery (CMOS battery)

**NOTE: Only perform this step if the device is outside warranty.   As removing the CMOS might void any warranty.

You'll have to check the Hardware manual for your device to see how to navigate to this.

The HW manual is under "Knowledge Base & Guides" on the Support Page, then the "User Guides" section.

Best way to see what a CMOS battery on a laptop looks like is to google it, as it differs a bit.

The most common one looks like a small silvery coin.

 

 

If the device is still within warranty and the device is bricked, I'd suggest contacting Lenovo support for your country directly (mail, e-ticket, phone) and see what can be done. Most likely it will have to be sent in to be assessed by an authorized technician.

 

Good luck

 

Regards

 

Voithos



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2 Posts

09-16-2020

NP

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  • Message 3 of 3

Re:BIOS Recovery

2020-09-16, 13:59 PM
@Voithos, thanks for your prompt response. I'll go through your step-by-step process and revert back here. Regards!
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