Windows 7: Win7 setup ACPI not compatible?

Hey everyone I really need some help with this:
I just burnt my Windows 7 install .iso to a DVD and rebooted my computer ready for the installation. I wait for the windows files to load, then when the bar is full, the screen goes to a blue screen with this message:

"...The BIOS in this system is not fully ACPI compliant. Please contact your system vendor for an updated BIOS.
Technical information:
*** STOP: 0x0000000A5 (0x0000000000001000, 0x0000000000000000, 0x00000000FFFFFFFF, 0x0000000000002040)"

Please help me sort this out, I have a fairly new computer that has been running XP SP3 without error thus far, and I am very keen to make the leap to Windows 7. Any and all help is most appreciated.



Thanks in advance.

Hello & Welcome Simonsiknasty,

Thanks for filling in you specs


Check in your Bios setup where you can turn ACPI "On" or "Off"

Also a lot of us have found Windows 7 installs best the first time with 2 gb ram, then the other 2gb can be added later when it is running smoothly & all needed drivers have been installed. There are a lot of great members here to help you with problems.
Just keep asking questions & giving us the best details for the situation.

" Doc "

I've been into the BIOS setup a couple of times. The ACPI Function is ENABLED and the ACPI Suspend Type is S1 (POS) from memory.

I have tried installing the latest drivers for my chipset as well.

Are you suggesting that I take out my RAM and then give the installation a go?

Yep, has worked for a bunch of us

Okay here goes...
I must admit I'm rather pessimistic but however.
One question; how to safely remove the RAM and where to put it after taking it out?

How many chips is it ? 1, 2, 3, 4 ? Just remove & put somewhere safe so it will not get broken, until you re-install it later.

Sweet it came out nicely (I have two chips 2GB each).

However when I restarted, I went to boot menu, and booted from CD. The windows loaded files. Then it showed the loading bar that Windows 7 shows when you turn the computer on. After that then it went to what appeared to be a Windows 7 desktop minus everything but the wallpaper and mouse (in something like 800x600 resolution).
What's up with that?

If you are booting from the DVD, it should go to the Windows 7 install screen

Does the Windows 7 install screen have a mouse? lol maybe I got impatient waiting for something to happen...

Like This ? with mouse cursor !