Removing the heat sink............................................... 53Prerequisites........................................................................................... 53Procedure............................................................................................... 53Replacing the heat sink................................................55Procedure............................................................................................... 55Post-requisites........................................................................................55Removing the I/O board.............................................. 56Prerequisites........................................................................................... 56Procedure............................................................................................... 56Replacing the I/O board.............................................. 58Procedure............................................................................................... 58Post-requisites........................................................................................58Removing the power-adapter port...............................59Prerequisites........................................................................................... 59Procedure............................................................................................... 59Replacing the power-adapter port................................61Procedure................................................................................................ 61Post-requisites.........................................................................................61Removing the system board........................................ 62Prerequisites........................................................................................... 62Procedure............................................................................................... 62Replacing the system board.........................................66Procedure............................................................................................... 66Post-requisites........................................................................................ 67Entering the Service Tag in the BIOS......................................................676