Lithium coin cell battery ................................................................................................................................... 19
SATA hard drives ..................................................................................................................................................................... 19
Cable management ............................................................................................................................................................... 20
4 Removal and replacement procedures .............................................................................................................................................. 21
Preparation for disassembly ................................................................................................................................................ 21
Access panel ........................................................................................................................................................................... 21
Optical drive ............................................................................................................................................................................ 22
Front bezel .............................................................................................................................................................................. 23
Hood sensor module ............................................................................................................................................................. 24
Memory modules (DIMMs) .................................................................................................................................................... 25
Expansion card ....................................................................................................................................................................... 28
Drive cage ................................................................................................................................................................................ 29
Hard drive ................................................................................................................................................................................ 30
Speaker .................................................................................................................................................................................... 34
WLAN module ......................................................................................................................................................................... 35
Solid-state drive ..................................................................................................................................................................... 37
Fan shroud ............................................................................................................................................................................... 38
Heat sink .................................................................................................................................................................................. 39
Processor ................................................................................................................................................................................. 40
Power supply .......................................................................................................................................................................... 42
Battery ..................................................................................................................................................................................... 43
System board .......................................................................................................................................................................... 46
5 Troubleshooting without diagnostics ................................................................................................................................................. 49
Before you call for technical support .................................................................................................................................. 49
Helpful hints ............................................................................................................................................................................ 50
Solving general problems ..................................................................................................................................................... 51
Cannot access the Computer Setup (F10) Utility when booting the computer ....................................... 51
Computer appears locked up and will not turn o when the power button is pressed ........................ 51
Computer will not respond to keyboard or mouse ...................................................................................... 51
Computer date and time display is incorrect ................................................................................................ 51
There is no sound or sound volume is too low ............................................................................................. 52
Cannot remove computer cover or access panel ......................................................................................... 52
Poor performance ............................................................................................................................................. 52
Computer powered o automatically and the power light blinks red four times and then white
two times ............................................................................................................................................................ 53
System does not turn on and the lights on the front of the computer are not blinking ....................... 53
Solving power problems ....................................................................................................................................................... 55
Power supply shuts down intermittently ...................................................................................................... 55
iv ENWW
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