Insert the processor into the U2 socket. Remember that the processor notch needs to face to the right along with the socket. The processor has a dot on pin1 which should be oriented to the upper right of the tree.
It helps to carefully press the side of the pins on the IC against the table to flaten them and make it easy to insert. Make sure the pins are all aligned before pushing it into the socket so that none of the pins get bent under.