x
Performance (OS) ............................................................................................................................ 110
Intermittent shutdown ................................................................................................. 111
Blue screen .................................................................................................................... 112
No wake up .................................................................................................................... 116
Unresponsive ................................................................................................................ 117
Slow performance ......................................................................................................... 117
Incorrect time and date ................................................................................................ 118
Display ............................................................................................................................................. 119
Display anomalies ......................................................................................................... 119
Symptom .................................................................................................... 119
Quick check ................................................................................................. 120
Dead pixel ..................................................................................................................... 121
No video (internal) ........................................................................................................ 121
No video (external) ....................................................................................................... 122
DisplayPort/VGA ........................................................................................................... 122
HDMI .............................................................................................................................. 122
Touch screen ................................................................................................................. 124
I/O devices ....................................................................................................................................... 125
Keyboard ....................................................................................................................... 125
Keyboard point stick ..................................................................................................... 126
Keyboard backlight ....................................................................................................... 126
TouchPad ....................................................................................................................... 127
WWAN .............................................................................................................................. 48
USB ................................................................................................................................ 130
Smart card reader ........................................................................................................... 69
Thunderbolt (TB) ........................................................................................................... 133
Storage ............................................................................................................................................ 134
Read-write error ........................................................................................................... 136
Slow performance ......................................................................................................... 136