Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: BSOD at boot says "...not fully ACPI compliant" but worked before

08 Jan 2015   #1

Win 7 64b Home Premium
BSOD at boot says "...not fully ACPI compliant" but worked before

From power cycle or push-button reboot, I now fall into Windows Error Recovery screen, with options to

- Launch Startup Repair (recommended)
- Start Windows Normally

The first one goes to BSOD declaring "The BIOS in this system is not fully ACPI compliant. Please contact your system vendor for an updated BIOS."

The second one attempts a boot and either hits BSOD or comes back to the Error Recovery screen.

The system has been running for almost three years, no new software installed, though there is the occasional Acrobat or Java update or whatever. System Vendor (Lenovo) does not list an update for the BIOS.

Ugh. I can't think of any solutions that aren't a few full days of dealing with formatting disks and rebuilding the OS. Help!

My System SpecsSystem Spec
10 Jan 2015   #2

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit

I think you are facing a stop 0xA5, ACPI_BIOS_ERROR.

That is a problem relating to the BIOS, as a whole. But, depending on the parameters the generating cause may be different.

Can you post a camera snap of the blue screen so that we can see the parameters?

Also, boot into the BIOS, set it to default.

Finally, let us know which motherboard do you use.
My System SpecsSystem Spec

 BSOD at boot says "...not fully ACPI compliant" but worked before

Thread Tools

Similar help and support threads
Thread Forum
Win 8.1 to 7 downgrade bios not fully acpi compliant
I am trying to downgrade a dell inspiron 3531 from 8.1 to 7 by using a memory stick but when booting from from the usb stick it loads files and just comes up with bios not fully acpi compliant error. Have been told to install with a dvd but havn't tried this yet. Read a few threads about this error...
Hardware & Devices
BSOD at boot says "...not fully ACPI compliant"
I installed windows 7 and theirs no problem with it, but later I decided to downgrade my W7 to Wxp. When I install win xp when installation was in "Windows starting to set up" but later on something came up which says "ACPI Bios is not fully ACPI compliant"...
Installation & Setup
Reinstall driver "Microsoft ACPI Compliant Control Method Battery"
Hello all, I've spent a good few days trying everything the internet has thrown up to fix my mistake but nothing has worked. I shall list my attempts to fix subsequently. My problem is this: six days ago, I was using my laptop on its battery and I noticed that the battery icon in the...
bios not fully acpi compliant stop error
Before I get into the details of the issue I want to point out that this computer was running Windows 7 fine without any bsod or other errors for about 6 months. 6 months ago I performed a wipe/ restore of my system drive to clean out the crud that windows/programs build up over time. windows 7 had...
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 19:30.
Twitter Facebook