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Aurora R5 Service Manual

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System diagnostic lights

The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode. However, if the computer fails the POST, the computer emits a series of LED codes in amber color during the start-up.

The following table shows different light patterns, what they indicate, and the suggested solutions.

Number of Power LED flashes Problem description Suggested solution
1 System board: BIOS and ROM failure Flash latest BIOS version. If problem persists, replace the system board.
2 No memory or RAM detected Confirm that the memory module is installed properly. If problem persists, replace the memory module.
3 System board or chipset error Replace the system board.
4 Memory or RAM failure Replace the memory module.
5 CMOS battery failure Replace the CMOS battery.
6 Video card or chip failure Replace the video card.
7 CPU failure Replace the system board.
3,6 BIOS recovery image not found Reimage the system BIOS.
3,7 BIOS recovery image found but invalid Reimage the system BIOS.

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