iPhone 4S Logic Board
Aligning with the black pointy “thing” definitely helps. Also, the small copper end of the contact piece is supposed to stick up once attached, to make contact with the back plate of the phone after re-assembly. The piece slides under the silver metal plate, and the the pointer can be used to align the silver plate hole and the black/copper plate hole in place for the screw.
If your driver is just spinning in this step, you may be trying to turn the offset screw instead of the phillips screw beneath the tape. The tape is not obvious, and I found tweezers helpful when removing it.
Be careful to lift the battery out at the angle shown here. You may need to use a spudger to get it started. The little plastic overhang on the left side of the battery clip in this picture is extremely easy to break! And it’s the only thing that holds the battery in place.