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ahumayoun
Paper Tape
Posts: 4
Registered: ‎07-02-2016
Location: UK
Views: 8,364
Message 1 of 7

ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

Hi There I have pre installed windows 10 home 64 bit in this PC and I want to install windows 7 on it. The problem is that I am unable to install windows 7 as it stop with blue screen stop message ("Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant. Please contact your system vendor for an update bios") I downloaded and installed BIOS Update for Windows 7 (32-bit & 64-bit), Windows 8.1 (32-bit & 64-bit), Windows 10 (32-bit & 64-bit) - ideapad 100-14IBY, 100-15IBY, Lenovo B50-10 Laptop driver from Lenovo support but after updating of bios still system stop after booting and copying pre windows files with blue screen error message as stated above. I have also tried to make a clean installation of windows 10 home 64 after downloading from Microsoft web site but system is not accepting the windows key. I have also not receive any windows key sticker or key on the back of laptop. URGENT REQUEST Nothing is changed prior to problem. It is my humble request to please resolve my problem as soon as possible as my wife and son are so much unhappy with this and they are unable to use computer .The partition of computer is quite unfair all space is given to C if C lost all data will lost. My wife is unable to carry on her university work as she don't want to work on windows 1020160702_171408.jpg

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 8,261
Message 2 of 7

Re: ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

Hi there, Ahuma   -

 

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

 

This Error can occur if Windows has detected that the BIOS in the computer is not fully compliant with Advanced Configuration and Power Interface (ACPI).

 

Click here for better understanding.

 

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"

SkulD
Paper Tape
Posts: 1
Registered: ‎11-09-2016
Location: PH
Views: 7,308
Message 3 of 7

Re: ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

i have the same problem with my ideapad 100-15iby the link that you gave is for the laptop g50 and the bios settings is not the same.. i also tried updating the bios beforehand but it still doesnt work.. im trying to downgrade the pre installed windows 10 to windows 7.. windows 10 is just to slow.. 

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 7,298
Message 4 of 7

Re: ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

Hi there, Skul              -

 

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

 

Could you please attach BIOS snapshot to assist you further?

 

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"! 

johannlepers
What's DOS?
Posts: 2
Registered: ‎05-10-2017
Location: PF
Views: 6,161
Message 5 of 7

Re: ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

Hi 

the same ideapad, and the same problem.

I have the lastest bios by update by step: cccn14ww update to cccn15ww. I have stop the ideapad and uptade to  cccn21ww.

And always Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant. what can i do, i need windows 7.

Thanks,

johann

 

image removed

 

Mod's Edit: Image removed for the owner's protection as it showed the serial number of the system. Please edit out the serial number if you wish to re-post the image. Thanks!

 

 

johannlepers
What's DOS?
Posts: 2
Registered: ‎05-10-2017
Location: PF
Views: 6,161
Message 6 of 7

Re: ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

Sorry i forget, hello!

thanks

 

Stoych
Paper Tape
Posts: 2
Registered: ‎01-15-2018
Location: BG
Views: 4,297
Message 7 of 7

Re: ideapad, 100-15IBY "Stop 0x000000A5 the BIOS in the system is not fully ACPI compliant.

I have the exact same problem and did exactly the same things as ahumayoun.

Do we have some sort of solution for that particular issue?

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