Asus bios flash failed

Hello,

i have a computer of my sisters for uni work that she wants to upgrade. it currently runs windows xp no problems.

i have a hard drive with windows 7 on it from my good computer and it boots perfect and loads into windows 7 etc.

cloned it. with bootsuite2011

tested the clone in the computer i cloned it from and it works sweet.

i put it in the other PC and no such luck, drops out at the windows loading screen.
i tried all all bootsuite tools to fix the problem with no luck

is the problem that windows 7 will not load on an older bios?

so i thought that might be the problem anyway so i tried updating bios with another dead end.

bios will not update no matter which bios i use it says its not compatible.

current bios is:
model: P5L-VM-1394
version: 0405
chipset: 945G
date : 1/10/2007
Bios Type: AMI
Bios Size: 512k

i tried using EZ Flash 2 that is built into my system and it says that the bios ID is incompatible or something (and i tried all bios available for that board from ASUS site)

i also tried running the XP HDD and using the AFUWIN with no luck either and a couple other flash programs.

is there something i have missed and I'm focusing on the wrong area???