System Board: Dell Inspiron 1100, 5100, and 5150 Service Manual
20. Lift the front of the system board out and away from the base plastics.
Installing the System Board
1.Insert the video connector on the replacement system board through the back of the base plastics.
2.Replace the two hex nuts that secure the video connector to the base plastics.
3.Replace the two M2.5 x
4.Replace the two M2.5 x
5.Replace the three M2.5 x
6.Replace the battery bay shield, and reinstall the two M2.5 x