Since there is some multiplier problem in the current bios of this board, I've tried to use at least 7.5 x 133mhz using the jumper on the board. When I set it a 133mhz it won't boot. Black screen and that's all. My L1 bridge are closed and works well since I can change de multiplier on an MSI K7TPRO2A. Is this a L7 Bridge problem ? I need to close them all or what? Thanks for any inputs.