Few months ago, I was going to replace the case of my gba sp, but accidently I broke it. When I try to turn on the gba, the power light blinks once and nothing else happens.

I noticed that there was a component that fell from the circuit board...



Does anyone which component is that nad if there's some way to replace it? By the way, there is some numbers and letters in the small black disc, 262 3F.