Mercury is gone....vanished from the internet a few months ago.
This was their last know web address but it's now dead:
you didn't say if your mb is Mercury retail or if it came installed in a a PC system like Gateway. They used some Mercury motherboards. If yours came installed in a Gateway (or other brand) pc, then you need to say the brand and model of pc it came installed in. Or visit the vendors website to see if they offer support.