Troubleshooting Tools 105
HARD-DISK DRIVE READ FAILURE — Possible HDD failure during HDD boot test
(see "Contacting Dell" on page 267 for assistance).
KEYBOARD FAILURE — Keyboard failure or keyboard cable loose (see "Keyboard
Problems" on page 120).
NO BOOT DEVICE AVAILABLE — The system cannot detect a bootable device or
partition.
• If the floppy drive is your boot device, ensure that the cables are connected and
that a bootable floppy disk is in the drive.
• 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 "Entering System Setup" on page 79).
NO TIMER TICK INTERRUPT — A chip on the system board might be
malfunctioning or motherboard failure (see "Contacting Dell" on page 267 for
assistance).
NON-SYSTEM DISK OR DISK ERROR —Replace the floppy disk with one that
has a bootable operating system or remove the floppy disk from drive A and restart
the computer.
NOT A BOOT DISKETTE —Insert a bootable floppy disk and restart your
computer.
USB OVER CURRENT ERROR — Disconnect the USB device. Use an external
power source for the USB device.
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