Originally Posted by avajo71
But I get my motherboard experience something problem. I can't use it again, before I change my motherboard with new one.
You fried the board with ESD, or otherwise mishandled it. Motherboards can't be damaged by installing the maximum amount of RAM. It either won't work, or it will. If it doesn't work, there's many reasons why, but just installing the maximum number of sticks or RAM amount won't kill the board itself.