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
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...
"Can't Open ACPI ATK0100 kernel Mode Driver" error at boot.
Hi, everyone. I hope someone here can help me, as I can't seem to solve this problem I'm having. Basically, I have two laptops here. There is my brother's Toshiba Equium L40-156, and a HP Compaq 6720s. I made an image of the hard drive in the Toshiba laptop, and restored that image to the...
BIOS in system not fully ACPI compliant 0xA5 during install
Hi there, so I'm fixing a laptop which suddenly started getting BSODs: It was running Windows 7 before but suddenly it started getting the 0xA5 BSOD no matter what was attempted. So I got the PC and tried booting from linux USB stick to test HDD and RAM - No problems. I figured since it was...
BSOD Help and Support
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
"Windows 7 7601 not genuine" and OS won't fully boot
Hello there, Windows 7 is booting normally until it get stuck on a blue screen (not a BSOD) that says "Windows 7 7601 not genuine" on the bottom right corner. Problem is Windows won't go anywhere from here. I just can't do anything else (except ctrl-alt-supp which just allows me to reboot). As...
Windows Updates & Activation

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 21:10.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App