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Troubleshooting Tools 121
NO BOOT DEVICE AVAILABLE —
• If the floppy drive is your boot device, ensure that bootable media 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
(see "System Setup
" on page 75
)
and ensure that the boot
sequence information is correct.
NO BOOT SECTOR ON HARD-DISK DRIVE — Enter system setup (see "System
Setup" on page 75) and ensure that the computer configuration information for
the hard drive is correct.
If the message continues to appear after you ensure that the information in system
setup is correct, see your operating system documentation for reinstallation
information.
NO TIMER TICK INTERRUPT — Run the Dell Diagnostics. See "Dell Diagnostics"
on page 123.
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 bootable media and restart your computer.
NOT ENOUGH MEMORY OR RESOURCES. CLOSE SOME PROGRAMS AND TRY
AGAIN — Close all windows and open the program that you want to use. In some
cases, you might have to restart your computer to restore computer resources. If so,
run the program that you want to use first.
OPERATING SYSTEM NOT FOUND — Contact Dell (see "Contacting Dell" on
page 287).
PLEASE CONNECT USB KEYBOARD/MOUSE TO USB PORTS ON THE BACK OF
THE COMPUTER — Turn your computer off, connect the USB keyboard and/or
mouse to the USB connectors on the back of the computer, and then restart your
computer.