Attention: If the computer has been turned off for a long period of time the thermal grease between the microprocessor heat sink and the microprocessor might not allow them to be separated easily. In this case turn on the computer for a few minutes to soften the grease.
Turn off the computer and disconnect the power cord from the electrical outlet.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer.
Carefully take note of the location of all cable connections on the system board. It will be necessary to reconnect them properly when installing a new system board assembly.
Take note of the cable routing. It is important to route the cables properly when installing the new system board.
Disconnect the diskette drive cable from the system board by sliding the plastic cable retainer upward to release the cable.
Disconnect all other cables connected to the system board.
Microprocessor heat sink
Fan connectors (2)
DIMM connectors (2)
SATA 1 IDE and SATA 2 ISE connectors (2)
PCI riser connector
Diskette drive connector
Front panel connector
Power connector (P1)
PATA Primary IDE connector
Power connector (P2)
Heat sink clamps
CD audio connector
Using the two blue handles provided, lift the system board assembly out of the computer.
Note: You will have to tilt the system board assembly and move it around the edge of the power supply assembly to remove it from the computer.
Take note of the location of the memory DIMMs and remove them from the system board.
Install the DIMMs on the new system board in the same location as they were on the system board being replaced.
Install the new system board assembly into the computer chassis by aligning the two tabs on the rear of the system board assembly with the slots in the rear of the computer chassis. Slide the system board assembly to the rear until the front edge of the system board assembly fits behind the flange in the front and is seated flush to the bottom of the chassis.
Reconnect all cables that were disconnected from the system board. Make sure all cables are routed correctly.