Dell R610 owner manual 2. System Messages continued

Table 1-2. System Messages (continued)

Message	Causes	Corrective Actions
Mirror mode	The memory configuration	Reconfigure the memory
disabled. For	does not match the setting in	modules for Memory
mirror mode,	BIOS. The BIOS setting has	Mirroring mode. See "System
DIMMs must be	been disabled.	Memory."
installed in
pairs. Pairs must
be matched in
size and
geometry.
No boot device	Faulty or missing optical	Use a bootable USB key, CD,
available	drive subsystem, hard drive,	or hard drive. If the problem
	or hard-drive subsystem, or	persists, see
	no bootable USB key	"Troubleshooting an Internal
	installed.	SD Card," and
		"Troubleshooting Hard
		Drives," "Troubleshooting an
		Optical Drive," and
		"Troubleshooting a USB
		Device." See "Using the
		System Setup Program and
		UEFI Boot Manager" for
		information on setting the
		order of boot devices.

No boot sector on Incorrect configuration

hard drive settings in System Setup program, or no operating system on hard drive.

Check the hard-drive configuration settings in the System Setup program. See "Using the System Setup Program and UEFI Boot Manager." If necessary, install the operating system on your hard drive. See your operating system documentation.

No timer tick	Faulty system board.	See "Getting Help."
interrupt

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