Okay so aside from the title how could I revive a BIOS chip jumper if the BIOS itself is erased (hypothetically) and took the jumper with it. I know it sounds stupid but trust me, it ain't. Think about it, if you had no way to obtain a new CMOS chip and it was erased, how would you revive the whole thing. Given the CMOS battery had lost charge also. No you can't get a new battery either.