HELP! Am I in trouble?

Bought a new fish tank case a while ago to replace my old dusty case. When I was removing the GPU. It took me a little time remove the GPU because it was stuck in there real good. So i had to use a little bit more force than usual. After getting the GPU out of the case a small black gold button rolled out of the case. And i think I somewhat yanked or pried it with the GPU. Is this still fixable or do i need to replace my Motherboard?