There ARE newer bioses.. . I have the same card and board and it works fine. Flash up, restore bios defaults, fast writes off, then try it. It is a crappy board, but it works..If it still won't boot, RMA the card or at least try it in another system..

BIOS Properties
System BIOS Date 03/13/03
Video BIOS Date 03/03/24

BIOS Manufacturer
Company Name American Megatrends Inc.
Product Information

Motherboard Properties
Motherboard ID xxxxxxxx-SiS746$L7S7A2L7S7A2

Motherboard Manufacturer
Company Name Elitegroup Computer Systems Inc.
Product Information
BIOS Download