Dell Precision M4600 (Early 2011) User Manual
Page 139

Diagnostic LED
Error Description
Blinking
Solid
Solid
The microcontroller is handing control of the
system to the processor. This code persists if no
processor is detected.
Solid
Blinking
Solid
The memory has encountered an error.
Blinking
Blinking
Blinking A system board component is faulty.
Blinking
Blinking
Solid
The video card is preventing the system from
completing POST.
Blinking
Blinking
Off
The keyboard is preventing the system from
completing POST.
Blinking
Off
Blinking The USB controller encountered a problem during
initialization.
Solid
Blinking
Blinking No SODIMMs are installed.
Blinking
Solid
Blinking The LCD encountered a problem during
initialization.
Off
Blinking
Blinking The modem is preventing the system from
completing POST.
139
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