Dell 6430U owner manual Beep Codes, Cause and Troubleshooting Steps

Turns on when wireless networking is enabled.

If the computer is connected to an electrical outlet, the battery light operates as follows:

Table 15. Battery Status Lights

Alternately blinking amber light and blue light	An unauthenticated or unsupported non-Dell AC adapter
	is attached to your laptop.
Alternately blinking amber light with steady blue light	Temporary battery failure with AC adapter present.
Constantly blinking amber light	Fatal battery failure with AC adapter present.
Light off	Battery in full charge mode with AC adapter present.
Solid white light on	Battery in charge mode with AC adapter present.

The lights located above the keyboard indicate the following:

Table 16. Keyboard Status Lights

Turns on when the numeric keypad is enabled.

Turns on when the Caps Lock function is enabled.

Turns on when the Scroll Lock function is enabled.

Beep Codes

The computer may emit a series of beeps during start-up if the display cannot show errors or problems. These series of beeps, called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is 3 seconds, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so, BIOS will jump out from looping and execute the normal shutdown process and power system.

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

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