Dell 6430U owner manual LED Error Codes, Cause and Troubleshooting Steps

Code	Cause and Troubleshooting Steps
	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
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

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