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Keyboard Status Lights
The green lights located above the keyboard indicate the following:
Turns on when the numeric keypad is enabled.
Turns on when the Caps Lock function is enabled.
Turns on when the Scroll Lock function is enabled.
LED Error Codes
The following table shows the possible LED codes that may display when your computer is unable to complete a power
on self test.
Appearance Description Next Step
No SODIMMs
are installed
1. Install supported memory modules.
2. If memory is already present, reseat
the module(s) one at a time in each
slot.
3. Try known good memory from another
computer or replace the memory.
4. Replace the system board.
System board
error
1. Reseat the processor.
2. Replace the system board.
3. Replace the processor.
Display panel
error
1. Reseat the display cable.
2. Replace the display panel.
3. Replace the video card/system board.
Memory
compatibility
error
1. Install compatible memory modules.
2. If two modules are installed remove
one and test. Try the other module in
the same slot and test. Test the other
slot with both modules.
3. Replace the memory.
4. Replace the system board.
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