Are you sure that your board is the P35 Platinum Combo and NOT the P35 Platinum. You need to actually look at the MB to be sure. They are different Boards and another user had the same problem but fixed it by flashing with the Correct BIOS.
Biostar tp35d2-a7 I have a modded BIOS for the following board but I can't attach it as it is too big. If someone wants to PM me somewhere to send the file... BIOSTAR TP35D2-A7 BIOS revision: 724 SLIC 2.1: HPQOEMSLIC-MPC SLP: Hewlett Uses 0+2 Method in Award tool. Tested with Vista SP1