Si vous comprenez pas l'anglais demandez moi un resumé en fr :
 
I have the same system and was able to unlock the BIOS in the following way:
 
- The BIOS is an AMI BIOS dated from 2008, it can be edited using AMI tools from that date (perhaps even more recent)
- Using AMIFLASH you can make a .rom backup of the BIOS
- Using AMIBCP you can edit that ROM file in a nice Windows GUI and enable the hidden voltage control settings
- Again use AMIFLASH to put that modified .rom into the BIOS chip
 
All the above can be done through Windows GUI so no need to dig into DOS.
The tools are a bit harder to find these days, I found them on the following sites:
http://www.ami.com/support/downloads/amiflash.zip
http://forums.mydigitallife.info/t [...] Bios-Tools
 
Each tool comes with a clear PDF manual explaining the features.
 
Vous pensez que sa marche ?
 
Le lien du site ou j'ai trouve sa https://www.bios-mods.com/forum/Thr [...] 01-a1-bios