Display assembly diagram
.......................................................................................................................
94
Dead pixel
.........................................................................................................................................................
94
No video (internal)
...........................................................................................................................................
94
No video (external)
..........................................................................................................................................
95
DisplayPort/VGA
..............................................................................................................................................
95
HDMI
.................................................................................................................................................................
95
No or bad external video via docking
..............................................................................................................
96
Incorrect or missing color/distorted image
.....................................................................................................
97
Touch screen
....................................................................................................................................................
97
I/O devices
................................................................................................................................................................
98
Keyboard
..........................................................................................................................................................
98
Keyboard pointing stick (select products only)
...............................................................................................
99
Keyboard backlight
........................................................................................................................................
100
Touchpad
........................................................................................................................................................
100
Network connectivity (RJ-45 jack)
................................................................................................................
101
Network connectivity wireless (WLAN)
.........................................................................................................
101
WWAN
.............................................................................................................................................................
102
USB
.................................................................................................................................................................
102
Smart card reader
..........................................................................................................................................
103
Speaker, headphone - audio issues
...............................................................................................................
104
Thunderbolt (TB)
............................................................................................................................................
105
Storage
...................................................................................................................................................................
106
Hard drive or solid-state drive not recognized
..............................................................................................
107
No boot to operating system (no read-write error)
......................................................................................
108
Read-write error
............................................................................................................................................
108
Slow performance
..........................................................................................................................................
109
Blue screen (BSOD) error
...............................................................................................................................
109
Noisy hard drive
.............................................................................................................................................
109
Mechanical
.............................................................................................................................................................
110
Noise (sound)
.................................................................................................................................................
110
Fan runs constantly
.......................................................................................................................................
111
Thermal shutdown (hot)
................................................................................................................................
112
Additional information
..................................................................................................................................................
113
Acronyms
...............................................................................................................................................................
113
Blinking lights and boot error codes
.....................................................................................................................
114
Processor not executing code
........................................................................................................................
114
BIOS recovery code unable to find valid BIOS recovery image
......................................................................
115
Memory module error
....................................................................................................................................
115
Graphics Controller Error (No Controller)
......................................................................................................
115
Failure System Board Error
............................................................................................................................
115
Intel Trusted Execution Technology (TXT) Error
...........................................................................................
116
Sure Start unable to find valid BIOS Boot Block image
.................................................................................
116
Sure Start has identified a problem (Manual Recovery Policy Set)
...............................................................
116
POST error messages and user actions
.................................................................................................................
116
Routine maintenance for performance improvement
..........................................................................................
118
Common blue screen error messages
...................................................................................................................
119
Error message list
..........................................................................................................................................
119
Bug check symbolic names
............................................................................................................................
119
vii