Message

Possible Cause

Corrective Action

CH-2 Timer Error

CMOS Battery

State Low

CMOS Checksum Failure

CMOS System Options Not Set

CMOS Display Type Mismatch

CMOS Memory Size Mismatch

CMOS Time and Date Not Set

Diskette Boot Failure

DMA Error

DMA 1 Error

DMA 2 Error

FDD Controller Failure

HDD Controller Failure

INTR1 Error

INTR2 Error

Invalid Boot

Diskette

An error is occurring on the timer on the system board.

The system configuration information in the system setup program is incorrect or the battery charge may be low.

Drive A or B is present but has failed the BIOS POST.

Error in the DMA controller on the system board.

The BIOS cannot communicate with the floppy drive or hard drive controller.

An interrupt channel on the system board failed to POST.

The operating system cannot be located on drive A or drive C.

See "Contacting Dell" on page 179 for instructions on obtaining technical assistance.

Enter the system setup program (see "Entering System Setup" on page 166), verify the system configuration, and then restart the computer.

Ensure that the drive is installed correctly in the computer (see "Drives" on

page 106) and defined correctly in the system setup program (see "System Setup" on page 166). Check the interface cable at both ends.

The keyboard or system board may need to be replaced.

Ensure that the floppy drive or the hard drive is installed correctly in the computer (see "Drives" on page 106) and defined correctly in the system setup program (see "System Setup" on page 166). Check the interface cable at both ends.

The keyboard or system board may need to be replaced.

Enter the system setup program (see "System Setup" on page 166) and confirm that drive A or drive C is properly identified.

Troubleshooting

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Dell XPS 720 owner manual Message Possible Cause
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XPS 720, 720 specifications

The Dell XPS 720 is a powerful desktop computer that epitomizes the brand's commitment to performance and innovation. Introduced as part of the XPS (Extreme Performance System) line, the XPS 720 was designed for gamers, content creators, and tech enthusiasts who demand high performance from their machines.

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Overall, the Dell XPS 720 stands out as a commendable desktop solution that combines raw power, flexibility, and cutting-edge technologies. It remains a favorite among those looking for a robust machine capable of handling a wide variety of demanding tasks, from gaming to professional creative work. Whether you are a hardcore gamer or a professional seeking performance, the XPS 720 offers an exceptional computing experience.
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