To replace the system board:
1Remove or disconnect the following devices from the system board:
Processor. (See “Replacing the processor” on page 61 for instructions.)
DIMMs. (See “Adding or replacing memory” on page 45 for instructions.)
AGP graphics card. (See “Replacing the AGP card” on page 51.)
Devices from the old system board that are not included with the new board, such as processor retention brackets.
2Remove the four screws that attach the system board to the system board tray assembly, then lift out the system board.
3Remove the new system board from its packing material.
System board
Rear I/O shield
System board tray assembly
4Install the new board onto the system board tray assembly, carefully aligning the ports and connectors with the holes on the rear I/O shield.
5Reinstall the four screws to secure the board to the tray assembly.
58System Components