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Code Cause and Troubleshooting Steps

1 BIOS ROM checksum in progress or failure

System board failure, covers BIOS corruption or ROM error

2 No RAM detected

No memory detected

3 Chipset Error (North and South Bridge Chipset, DMA/IMR/ Timer Error) , Time-Of-Day Clock test

failure , Gate A20 failure , Super I/O chip failure , Keyboard controller test failure

System board failure

4 RAM Read/Write failure

Memory failure

5 Real-time clock power fail

CMOS battery failure

6 Video BIOS test failure

Video card failure

7 CPU - cache test failure

Processor failure

8 Display

Display failure

LED Error Codes

Diagnostic LED codes are communicated via the Power Button LED. The Power Button LED blinks the corresponding

LED codes for the corresponding fault condition. Example: For No Memory detected (LED code 2) , The Power Button

LED blinks two times followed by a pause, blinks two times, pause, etc. This pattern continues until the system is

powered off.

Code Cause and Troubleshooting Steps

1 System board: BIOS ROM failure

System board failure, covers BIOS corruption or ROM error

2 Memory

No memory/RAM detected