Service and Maintain

System board
Description Spare part number
System board for use in models without Windows 8 758190-001
System board for use in models with Windows 8 Standard 758190-501
System board for use in models with Windows 8 Professional 758190-601
The system board is located on the right side of the computer (viewed from the rear). It is secured with
eight Torx screws.
To remove the system board:
1. Prepare the computer for disassembly (see
Preparing to disassemble the computer on page 35).
2. Remove the access panel (see
Access panel on page 39).
3. Remove the stand (see
Stand on page 41).
4. Remove the lower panel (see
Lower panel on page 44).
5. Remove the memory modules (see
Memory on page 59).
6. Remove the heat sink (see
Heat sink on page 70).
7. Remove the processor (see
Processor on page 72).
8. Remove the WLAN module (see
WLAN module on page 77).
9. Disconnect all cables from the system board, noting their location for reinstallation.
System board
87