I tested my new ECS L4S5M motherboard, put the chip, fan, memory, vidoe on and booted it up and it worked fine.
When I finished the install to the case with everything plugged in the way it is supposed to go( as far as the manual reads), and now I get a bios checksum error.

It won't even let me reset the bioor even go into setup to try and solve the problem.

If anyone has any suggestions I would appreciate it.

Thanks.