System board
NOTE: The system board spare part kit includes replacement thermal material.
Description Spare part number
System board for use in models without Windows 8 and with 2-GB of discrete graphics memory 725243-001
System board for use in models with Windows 8 Standard and with 2-GB of discrete graphics
memory
725243-501
System board for use in models with Windows 8 Professional and with 2-GB of discrete graphics
memory
725243-601
System board for use in models without Windows 8 and with 1-GB of discrete graphics memory 725242-001
System board for use in models with Windows 8 Standard and with 1-GB of discrete graphics
memory
725242-501
System board for use in models with Windows 8 Professional and with 1-GB of discrete graphics
memory
725242-601
System board for use in models without Windows 8 and with UMA graphics 725241-001
System board for use in models with Windows 8 Standard and with UMA graphics 725241-501
System board for use in models with Windows 8 Professional and with UMA graphics 725241-601
Before removing the system board, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 33) and then remove the following components:
a. Hard drive (see
Hard drive on page 34)
b. WLAN module (see
WLAN module on page 37)
c. Solid-state drive (see
mSATA drive on page 39)
d. Memory module service cover (see
Memory module on page 40)
e. Optical drive (see
Optical drive on page 42)
f. Keyboard (see
Keyboard on page 47)
g. Top cover (see
Top cover on page 50)
h. Fan (see
Fan on page 57)
Component replacement procedures 61
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