smd capacitor repair on logic board

by repairing the graphic issue on my imac, overheating and stuff, i destroyed my logic board. i lost one little smd capacitor, the one next to the most right down screw on the board. by getting the screw off, i cut the capacitor, think it is labeled with c7380 and know one part of the logic board doesnt get electricity. what can i do to find the right capacitor, to get the board working again. all three test lamps are flashing green. so i think it is just the little capacitor, fans and the on button are not working. harddrive works and lamps are green.

need help, thanks

philipp