Blue Screen of ACPI Compliant?

[tRiPpiNxSaV]

First, here are my stats:
Athlon XP 2600+ (windows xp pro)
asus a7n8x deluxe
wd 80gb hd
geforceti42008x
(2)corsair 512MBTWINX1024-3200LLPRO

Hi. I was playing video game when my computer aburptly restarted. When it restarted, the screen goes blue with the following messaage.

"The BIOS in this system is not fully ACPI compliant. Please contact your system vendor or visit http://www.hardware-update.com for an updated BIOS.
If you are unable to obtain an updated BIOS or the latest BIOS supplied by your vendoris not ACPI compliant, you can turn off ACPI mode during text mode setup. To do this, simply press the F7 key when you are prompted to install storage drivers. The system will not notify you that the F7 key was pressed - it will silently disable ACPI and allow you to continue your installation.

Technical information:

*** STOP: 0x000000A5 (0x00000011, 0x00000008, 0xF89C90C0, 0x0100000C"

Now, i search the forums and found it could be memory related. Thus I removed 1 stick of the corsair, and works.

However, im only running at 512mb ram. I want to run at 1g ram

Anyone know any suggestions on this? Could it be the BIOS? Why does this happen all of a sudden? Thank you for any feedback.

 

[GregANDTCH]

Is this your board?
A7N8X-E Deluxe
Which version bios are you on right now?
The 1008 bios for this board "1. Improve compatibility with certain memory modules".

 

[GregANDTCH]

I looked at the 1007 release & it did the same thing.
"1. Improve compatibility with certain memory modules"