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2 Posts

08-11-2014

UAE

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-18, 20:20 PM

Is the new Bios compatible with win 8.1 ? 

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12 Posts

11-21-2014

Kolkata

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-21, 5:25 AM

i've Lenovo Ideapad Z510 (59-405848) which comes with i5 4200M.Sometimes the CPU gets stuck at 0.77GHz so i wanted to update the BIOS. I saw the latest BIOS avaiable is 8DCN40WW (V40).Before updating i've gone though this diccusion,but after reading this 38 page discussion i'm utterly confused now.I saw some negetive remarks about this bios update.So before doing any mess with my laptop i just want to be sure about these things-

 

Q1.Does this BIOS (v40) solve the CPU struck problem completely?

Q2.Do i need to do a factory reset after BIOS update?( i'm worried because i have changed the partiion stucture,so i'm confused whether one key recovery will work or not)

Q3.Does this BIOS update create other problem?

Q4.Is the new Bios compatible with win 8.1 ?( Because i saw only windows 7 and windows 8 version avaiable) 

 

any help will be highly appreciated.. :)

 

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55 Posts

08-14-2014

Poland

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-21, 11:21 AM
Maybe you have Energy Saver profile active? Click battery icon on the taskbar and select other profile
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138 Posts

07-16-2014

United States of America

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-23, 8:25 AM

sorry i didn't read through the whole postings but off hand i think

 

check power savings advanced settings in windows.. look for cpu state %

 

use intel extreme tuning utility and see what that says for you clock.. and see if you can change clock from there..

 

only downclock don't overclock.. you just seeing if you can change your core clock settings..

 

be very careful with intel extreme tuning utility.. do not touch other settings and be very careful!

 

 

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11 Posts

12-31-2014

Philippines

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-31, 7:53 AM

 


wrote:

Just a note - BIOS v40 was officially released on 11/25 and can be found here: http://support.lenovo.com/us/en/products/laptops-and-netbooks/ideapad-z-series-laptops/ideapad-z510-notebook

 

Thanks to everyone who participated in the discussion and troubleshooting of the reports of the CPU becoming stuck at 0.77GHz. I appreciated your input and assistance.

 

Thank you,



What does this update do apparently? As it is not stated clearly.

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11 Posts

12-31-2014

Philippines

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-31, 7:55 AM

wrote:

i've Lenovo Ideapad Z510 (59-405848) which comes with i5 4200M.Sometimes the CPU gets stuck at 0.77GHz so i wanted to update the BIOS. I saw the latest BIOS avaiable is 8DCN40WW (V40).Before updating i've gone though this diccusion,but after reading this 38 page discussion i'm utterly confused now.I saw some negetive remarks about this bios update.So before doing any mess with my laptop i just want to be sure about these things-

 

Q1.Does this BIOS (v40) solve the CPU struck problem completely?

Q2.Do i need to do a factory reset after BIOS update?( i'm worried because i have changed the partiion stucture,so i'm confused whether one key recovery will work or not)

Q3.Does this BIOS update create other problem?

Q4.Is the new Bios compatible with win 8.1 ?( Because i saw only windows 7 and windows 8 version avaiable) 

 

any help will be highly appreciated.. :)

 


Someone please answer the above questions as we are all wondering the same thing.

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9 Posts

11-14-2014

Morocco

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  • Message 397 of 419

Re: Lenovo Z510 CPU stuck at 0.77GHz

2014-12-31, 20:45 PM

Hi. I will try to answer your question :

1- It solves the 0.77ghz limit but still turbo boost isn't used on powersaving mode.
2- Can't answer but as far as I know the update has nothing to do with key recovery.
3- Somebody on this topic said that he had a password for bios that contained special characters. Updated to v39 and coming from v26 his computer was of no use as he couldn't enter any special character.
4- If you mean the exe file then yes I installed it from Windows 8.
If you talking about the bios Its compatible with any operating system (Unix Windows ...etc)

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106 Posts

09-02-2013

India

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2015-01-16, 9:25 AM

friends, I have started a new thread for intel turbo boost issue in battery mode @ https://forums.lenovo.com/t5/IdeaPad-Y-U-V-Z-and-P-series/Z510-Buggy-bios-disables-turbo-boost-in-battery-mode/td-p/1856154

Please make your presence felt and keep thread alive...  

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1 Posts

02-06-2015

earth

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2015-02-07, 12:17 PM

I think it has been

SOLVED

Follow these steps

Click on battery icon in system tray(usually right bottom corner) ==>

Click on more power options ==>

Click on show additional plans==>

Click on high performance's ,,change plan settings,,

 

Click on change advanced power setting 

And finally click on restore plan defaults,  yes

   No require for bios updating

That is it.

No require for bios updating

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81 Posts

05-04-2014

India

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Re: Lenovo Z510 CPU stuck at 0.77GHz

2015-05-18, 12:36 PM

iknaidu has started a new thread for CPU FREQUENCY THROTTLING on battery power supply which is the issue of Intel turbo boost which works only when Charging the laptop or AC power supply, PLEASE give your presence on following thread

https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Z510-Buggy-bios-disables-turbo-boost-in-battery-mode/td-p/1856154

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