when i install vista booting from cd it says "The BIOS in this system is not fully ASPI compliant. please contact your system vendor for an updated BIOS."

how can i update my BIOS.. is there any latest version available?

BIOS info:

Brand : American Megatrends Inc.
Version: 07.00T
Date : 06/15/01

Motherboard info:

Manufacturer : ECS
Model : M766V91 1.0
Chipset : intel i810E Rev. A3
Southbridge : intel 82801BA (ICH2)
LPCIO : ITE IT8712

Support Information:
Device Type: BIOS / Motherboard
Manufacturer: AMI American Megatrends
Model: M766V91
Interface: IDE
Operating System: Windows XP Home
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=3200&qa5=1&qa7=1500&dp=3&qm0=M766V91&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=AMI+American+Megatrends+BIOS+%2F+Motherboard++M7 66V91+Windows+XP+Home+) | Research manufacturer AMI American Megatrends (http://members.driverguide.com/index.php?action=getinfo&companyid=3200)

Hi there.

Since Elitegroup M766 type is a Pentium-III capable motherboard based on obsolete second revision of ICH southbridge and rare i810 northbridge you will defiinitely except problems with compatibility. I guess this ACPI compatibility error states that your system is so-called 99% ACPI-compatible. This all happens because of trails of legacy ISA bus support which has gone in newer chipsets for Pentium 4 etc. Since Vista have no predefinitions for ISA handling (as well as XP, actually) you probably wont install Vista on your PC due to this technical limitation.
I suggest that you change your PC for something newer like Pentium 4 - based or some Athlon XP stuff. Such devices are lower-budget class now and i could tell you that i've sucessfully installed and ran smoothly genuine Vista on a Athlon XP 2800+ (1.2Ghz) CPU based system. Its time for changing your hardware.