Dead pixel.................................................................................................................................................................................................................107
No video (internal) ..............................................................................................................................................................................................107
No video (external).............................................................................................................................................................................................107
DisplayPort/VGA ................................................................................................................................................................................................108
HDMI ...........................................................................................................................................................................................................................108
No or bad external video via docking..................................................................................................................................................109
Touch screen..........................................................................................................................................................................................................110
I/O devices ........................................................................................................................................................................................................................... 111
Keyboard.................................................................................................................................................................................................................... 111
Keyboard backlight............................................................................................................................................................................................ 113
Touchpad .................................................................................................................................................................................................................. 113
Network connectivity (RJ-45 jack).......................................................................................................................................................... 114
Network connectivity wireless (WLAN) .............................................................................................................................................. 114
WWAN......................................................................................................................................................................................................................... 115
USB ............................................................................................................................................................................................................................... 115
Smart card reader .............................................................................................................................................................................................116
Speaker, headphone - audio issues.......................................................................................................................................................117
Thunderbolt (TB) ..................................................................................................................................................................................................118
Storage..................................................................................................................................................................................................................................119
Read-write error ................................................................................................................................................................................................. 122
Slow performance ............................................................................................................................................................................................ 123
Blue screen (BSOD) error............................................................................................................................................................................ 123
Noisy hard drive.................................................................................................................................................................................................. 123
Mechanical.........................................................................................................................................................................................................................124
Noise (sound).........................................................................................................................................................................................................124
Fan runs constantly ......................................................................................................................................................................................... 125
Thermal shutdown (hot) ................................................................................................................................................................................ 126
Additional information...........................................................................................................................................................................................................127
Acronyms.............................................................................................................................................................................................................................127
Blinking lights and boot error codes............................................................................................................................................................... 128
Processor not executing code................................................................................................................................................................. 129
Memory module error .................................................................................................................................................................................... 129
Failure System Board Error........................................................................................................................................................................130
POST error messages and user actions...................................................................................................................................................... 131
Common blue screen error messages ........................................................................................................................................................133
Error message list.............................................................................................................................................................................................133
Bug check symbolic names.......................................................................................................................................................................134
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