Now I see. There's a dirty-nasty trigger bit. It hides the menu using a certain trigger and unhides depending on... something I can't tell due to current lack of knowledge. Foretunately, a BIOS mod will help in this case.
Use the following BIOS if an update won't help.
http://bios-mods.com/BIOS/AMI/ACHI%20mod...1000HE.zip
Use the following BIOS if an update won't help.
http://bios-mods.com/BIOS/AMI/ACHI%20mod...1000HE.zip