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Alert! Previous attempts at booting this system
have failed at checkpoint [nnnn]. For help
in resolving this problem, please note this
checkpoint and contact Dell Technical
Support — The computer failed to complete
the boot routine three consecutive times for the
same error. Contact Dell (see “Contacting Dell”
on page 65).
CMOS checksum error — Possible system
board failure or RTC battery low. Replace the
battery (see the Service Manual at
support.dell.com/manuals) or contact Dell (see
“Contacting Dell” on page 65).
Hard-disk drive failure — Possible hard-disk
drive failure during POST. Contact Dell (see
“Contacting Dell” on page 65).
Hard-disk drive read failure — Possible hard-
disk drive failure during HDD boot test. Contact
Dell (see “Contacting Dell” on page 65).
Keyboard failure — Keyboard failure or
loose cable. Replace the keyboard (see the
Service Manual
at support.dell.com/manuals).
No boot device available — No bootable
partition on hard drive, the hard drive cable is
loose, or no bootable device exists.
If the hard drive is your boot device, ensure •
that the cables are connected and that the
drive is installed properly and partitioned as
a boot device.
Enter system setup and ensure that the boot •
sequence information is correct (see the Dell
Technology Guide available on your hard
drive or at support.dell.com/manuals).
No timer tick interrupt — A chip on the system
board might be malfunctioning or system board
failure. Contact Dell (see “Contacting Dell” on
page 65).