Forget about a bios upgrade. This is a non-flash motherboard. Seems to be made by Chicony:
http://www.pcconcrete.ro/phtml/07/p07754.htmlCheck the entire top surface of the motherboard for any markings printed in white ink. They can be anywhere, including in between the slots. A layout sketch/picture would be most helpful, a description of the chipset and jumper names might help as well.
Chicony's support has never impressed me very much (e.g. almost none).