Keyboard Status Lights
numpad - caps lock - scrol lock (light code given in serial)
The green lights located above the keyboard indicate the following:
Turns on when the numeric keypad is enabled.
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Turns on when the Caps Lock function is enabled.
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Turns on when the Scroll Lock function is enabled.
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LED Error Codes
The following table shows the possible LED codes that may display in a no-POST situation.
Appearance
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Description
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Next Step
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ON-FLASH-FLASH
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No SODIMMs are installed
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FLASH-ON-ON
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System board error
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FLASH-ON-FLASH
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Display panel error
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OFF-FLASH-OFF
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Memory compatibility error
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ON-FLASH-ON
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Memory is detected but has errors
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OFF-FLASH-FLASH
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Modem error
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FLASH-FLASH-FLASH
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System board error
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FLASH-FLASH-OFF
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Option ROM error
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OFF-ON-OFF
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Storage device error
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FLASH-FLASH-ON
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Video card error
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Replace the system board.
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