I understand that your system will boot in to maintenance mode every time that you turn it on and it wont matter if you change the BIOS jumper from pins 1-2 to 2-3.
At this point it seems like you are experiencing a BIOS corruption or short on the motherboard.
I recommend testing the system out of the chassis on top of a non-conductive surface; this could be a wooden table or a newspaper. Also while you are taking the motherboard out of the chassis, you can clear the cmos by removing the power cables from the motherboard ( 2x12 and 2x2) and the cmos battery for an hour. Once you have the motherboard out of the chassis and cleared the cmos, we need to test the motherboard on a basic configuration, this means have the system as basic as we can. If the problem continues, please go ahead and perform a BIOS recovery, you can find the instructions at the following web site: