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Using Support Tools
CMOS checksum error — Possible system
board failure or RTC battery low. Replace the
battery. See the Service Manual at support.dell.
com or see “Contacting Dell” on page 58 for
assistance.
CPU fan failure — CPU fan has failed. Replace
the CPU fan. See the Service Manual at
support.dell.com.
Hard-disk (HDD) drive failure — Possible hard
disk drive failure during POST (see “Contacting
Dell” on page 58 for assistance).
Hard-disk drive read failure — Possible
hard drive failure during HDD boot test (see
“Contacting Dell” on page 58 for assistance).
Keyboard failure — Keyboard failure or loose
cable. Ensure that the keyboard cable is
connected. In case of keyboard failure, replace the
keyboard. For assistance, see the Service Manual
at support.dell.com.
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 Dell Technology Guide on your
computer or at support.dell.com).
No timer tick interrupt — A chip on the system
board might be malfunctioning or system board
failure (see “Contacting Dell” on page 58 for
assistance).