Dell T3400 manual 103, Determine if a conflict exists by, Card failure has

Light Pattern	Problem Description	Suggested Resolution
	A possible expansion	1 Determine if a conflict exists by
	card failure has	removing an expansion card (not a
	occurred.	graphics card) and restarting the
		computer (see "Cards" on page 162).

2 If the problem persists, reinstall the card you removed, then remove a different card and restart the computer.

3 Repeat this process for each expansion card installed. If the computer starts normally, troubleshoot the last card removed from the computer for resource conflicts (see "Restoring Your Operating System" on page 136).

4 If the problem persists, contact Dell (see "Contacting Dell" on page 269).

Another failure has • Ensure that all hard drive and

occurred.CD/DVD drive cables are properly connected to the system board (see "System Board Components" on page 148).

• If there is an error message on the screen identifying a problem with a device (such as the floppy drive or hard drive), check the device to make sure it is functioning properly.

• If the operating system is attempting to boot from a device (such as the floppy drive or CD/DVD drive), check system setup (see "System Setup" on page 81) to ensure the boot sequence is correct for the devices installed on your computer.

• If the problem persists, contact Dell (see "Contacting Dell" on page 269).

Troubleshooting Tools

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