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3 Posts

01-06-2021

RU

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Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-06, 3:35 AM

Hi.

 

Can you please help me with following issue?

I have a Legion 5 15ARH05. After last bios update EUCN29WW my laptop keeps resetting battery conservation mode and keyboard top-row function after sleeping mode or reset.

I've tried to reinstall and reset Lenovo vantage but it didn't help.

And I also don't have any drivers or windows updates available. 

 

Thank you for the help. 

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1 Posts

01-06-2021

CZ

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-06, 7:20 AM

I confirm, i have the same problem and also started after getting new BIOS.

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1518 Posts

03-11-2020

NO

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-06, 10:10 AM

Hello Rinatok,

 

Welcome to the Community Forums.

 


Make sure you also have the newest Chipset, Serial I.O and Management Engine Interface drivers for your device: 
You can find and install the newest drivers from the Lenovo Support Page
Just plot in the serial number of the device and hit enter, might have to press it twice, then head to Drivers & Software, select Manual Update, then the Chipset section
Right click the files in question and select "Run as Administrator".
**Note: Make sure the AC adapter is connected and that you have at least 30% battery charge when performing this update.

 

In the event this does not help solve the problem, then it's just a problematic BIOS version. If you updated the BIOS to fix a different problem, then you'll have to weigh which problem is the most annoying one then either decide to stay on the BIOS version until a fix comes through, or roll back to the previous BIOS version:

 

BIOS Back Flash
- Completely shut down the device.  
- Press the Novo Button :  It is the small reset hole on most devices that you need a unfolded paperclip to reach. 

- If you're device does not have a Novo Button, then pressing F1 or F2 repeatedly on startup will take you into the BIOS.
- In the "Configuration" Tab, set "BIOS Back Flash" to "Enabled"
- Click the "Exit" Tab and click "Save Exiting Changes" or Press "F10"
- PC will Restart and enter the Windows Environment.
- Head over to the Support Page for your device.
- Under Drivers & Software, Manual Update, then BIOS section, you can find the latest BIOS version.  
- Expand the BIOS driver with the down arrow. Right Click then select "Copy Link Address"
- Paste it into the URL section of the browser
- Change the nr of the bios version  (ex: 8HCN36WW  to 8HCN35WW or 8HCN34WW) and hit enter.
- Do this in the URL input section of the browser until you find the previous BIOS version to download.
- Right click the file and select "Run as Administrator"
**Note: You can also attach the file to a USB flash drive, boot from USB through BIOS and then run it that way.
**Note: Make sure the AC adapter is connected and that you have at least 30% battery charge when performing this update.

 

Regards

 

Voithos





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3 Posts

01-06-2021

RU

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-06, 21:39 PM

Thanks for the advise!

 

I've updated the chipset drivers but it changed nothing.

As for the BIOS back flash I think I'll wait for an update or hotfix. I'm a bit scared to mess it up.

 

Much appreciated for the help. 

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2 Posts

01-07-2021

EC

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-07, 4:45 AM

I'm also having this exact problem.

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2 Posts

01-07-2021

EC

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-08, 1:50 AM
I had to follow this steps to go from EUCN29WW to EUCN28WW. Fortunately, everything went fine. Doing a BIOS update is always a delicate thing, but this issue was so annoying that I had to do it. Thanks.
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7 Posts

08-22-2020

DE

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-13, 9:21 AM

Why is this issue marked as fixed? The issue still persists, it must be adressed. The solution can't be to roll back to an older bios version.

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2 Posts

01-14-2021

HU

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Re:Legion 5 15ARH05 Vantage keeps resetting battery mode and keyboard function

2021-01-14, 10:40 AM

There will be any easier hotfix/bios update for this? The battery save mode was one of my main reason for buying Lenovo laptop and i loved it. 

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