Dell NM176 owner manual Master DMA-register failure, Protected mode Improperly installed or faulty

Table 1-6. System Beep Codes (continued)

Code	Cause	Corrective Action
3-1-1	Slave DMA-register failure	Faulty system board. See "Getting Help"
3-1-2	Master DMA-register failure	on page 127.
3-1-3	Master interrupt-mask register
	failure
3-1-4	Slave interrupt-mask register
	failure
3-2-2	Interrupt vector loading
	failure
3-2-4	Keyboard-controller test
	failure
3-3-1	CMOS failure
3-3-2	System configuration check
	failure
3-3-3	Keyboard controller not
	detected
3-3-4	Video memory test failure
3-4-1	Screen initialization failure
3-4-2	Screen-retrace test failure
3-4-3	Video ROM search failure
4-2-1	No timer tick	Faulty system board. See "Getting Help"
4-2-2	Shutdown test failure	on page 127.
4-2-3	Gate A20 failure
4-2-4	Unexpected interrupt in	See "Troubleshooting Expansion Cards"
	protected mode	on page 113.
4-3-1	Improperly installed or faulty	See "Troubleshooting System Memory" on
	memory modules	page 108.

4-3-2 No memory modules installed in the first memory module connector

Install a memory module in the first memory module connector. See "System Memory" on page 81.

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