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Alienware Area-51m Service Manual

System diagnostic lights

Power and battery-status light/hard-drive activity light

Indicates the battery-charge status or the hard-drive activity.

  • NOTE: Press Fn+H to toggle this light between power and battery-status light and hard-drive activity light.

Hard-drive activity light

Turns on when the computer reads from or writes to the hard drive.

  • NOTE: Hard-drive activity light is supported only on computers shipped with hard drive.

Power and battery-status light

Indicates the power and battery-charge status

Solid white — Power adapter is connected and the battery has more than 5 percent charge.

Amber — Computer is running on battery and the battery has less than 5 percent charge.

Off
  • Power adapter is connected and the battery is fully charged.
  • Computer is running on battery and the battery has more than 5 percent charge.
  • Computer is in sleep state, hibernation, or turned off
  • NOTE: Hard-drive activity light is supported only on computers shipped with hard drive.

The power and battery-status light blinks amber along with beep codes indicating failures.

For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times followed by a pause. This 2,3 pattern continues until the computer is turned off indicating no memory or RAM is detected.

The following table shows different light patterns and describes what they indicate.

Table 1. Diagnostics. The following table provides the different light patterns and what they indicate.
Light pattern Problem description
2,1 CPU failure
2,2 System board: BIOS and ROM failure
2,3 No memory or RAM detected
2,4 Memory or RAM failure
2,5 Invalid memory installed
2,6 System board or chipset error
2,7 LCD failure
3,1 CMOS battery failure
3,2 PCI or video card or chip failure
3,3 Recovery image not found
3,4 Recovery image found but invalid
3,5 Power rail failure
3,6 SBIOS flash corruption
3,7 Timeout waiting on ME to reply to HECI message

Camera status light: Indicates whether the camera is in use.

  • Solid white — Camera is in use.
  • Off — Camera is not in use.

Caps Lock status light: Indicates whether Caps Lock is enabled or disabled.

  • Solid white — Caps Lock enabled.
  • Off — Caps Lock disabled.

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