Pull With Tweezers
If the microSD card is visible and the eject mechanism does not work, you may be able to remove the card with a small pair of tweezers. Shut down the computer and remove all power sources, and then pinch the tweezers small enough to get into the card slot, but leaving enough room to fit around the card. Grab on to the card and pull to force the card out. Alternatively, if the card is jammed in such a way that the tweezers can't grab onto it, insert a thin object like a straightened paperclip, nail file or flathead screwdriver into the slot, apply pressure to the microSD card with the object, and then slide the card out of the slot.