Dell XPS 720 Owner's Manual page 71

Message
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
Possible Cause
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.
Corrective Action
See "Contacting Dell" on page 181 for
instructions on obtaining technical
assistance.
Enter the system setup program (see
"Entering System Setup" on page 168),
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 168). 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 168). 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 168) and confirm
that drive A or drive C is properly
identified.
Troubleshooting
71