System board

Component

Spare part number

 

 

System board equipped with an Intel Core i7-4710 processor (includes thermal grease and thermal pads)

 

 

 

Includes 16 GB of system memory and 4 GB of discrete graphics memory for use in models without the

788615-001

Windows operating system

 

 

 

Includes 16 GB of system memory and 4 GB of discrete graphics memory for use in models with Windows

788615-501

8.1 Standard

 

 

 

Includes 16 GB of system memory and 4 GB of discrete graphics memory for use in models with Windows

788615-601

8.1 Professional

 

 

 

Includes 8 GB of system memory and 4 GB of discrete graphics memory for use in models without the

788616-001

Windows operating system

 

 

 

Includes 8 GB of system memory and 4 GB of discrete graphics memory for use in models with Windows

788616-501

8.1 Standard

 

 

 

Includes 8 GB of system memory and 4 GB of discrete graphics memory for use in models with Windows

788616-601

8.1 Professional

 

 

 

Includes 8 GB of system memory and 2 GB of discrete graphics memory for use in models without the

788614-001

Windows operating system

 

 

 

Includes 8 GB of system memory and 2 GB of discrete graphics memory for use in models with Windows

788614-501

8.1 Standard

 

 

 

Includes 8 GB of system memory and 2 GB of discrete graphics memory for use in models with Windows

788614-601

8.1 Professional

 

 

 

Before replacing 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 bottom cover (see Bottom cover on page 23).

5.Remove the battery (see Battery on page 31).

6.Remove the WLAN module (see WLAN module on page 26).

7.Remove the SSD module (see Solid-state drive (M.2) on page 28).

8.Remove the heat sink and fans (see Heat sink and fans on page 29).

Remove the system board:

1.Disconnect the following cables from the system board.

(1): Display cable

(2): Left speaker cable

(3): Power connector cable

(4): Left light assembly

(5): TouchPad cable

34 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts