15. Position the new system board in the chassis. Align the mounting studs on the bottom of the systemboard with the corresponding holes in the chassis. Then, push the new system board toward the rear ofthe computer until it snaps into position. Ensure that the system board is secured by the metal retainer.Note: The number of mounting studs on the system board on your computer might be different from theillustration.Figure134. Installing the system board16. Reinstall all parts that you have removed one by one in the reversed sequence as you remove them.Refer to the information that you have noted down and the related topics in Chapter 9 “Installing orreplacing hardware” on page 99. Connect all cables to the new system board. See “Parts on thesystem board” on page 35.17. Connect the external cables and the power cord to the computer.The failing system board must be returned with a microprocessor socket cover to protect the pins duringshipping and handling. Install the microprocessor socket covers removed from the new system boardon the failing system board.Note: The microprocessor socket cover installation procedure should be performed on both microprocessorsockets on the failing system board.To install the microprocessor socket cover, do the following:Chapter 9. Installing or replacing hardware 175