Dell Precision 390 User Manual page 130

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
Non-system disk or disk error —
drive A and restart the computer.
Not a boot diskette — Insert a bootable floppy disk and restart your computer.
Not enough memory or resources. Close some programs and try again —
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
Please Connect USB Keyboard/Mouse to USB Ports on the Back of the Computer —
and/or mouse to the USB connectors on the back of the computer, and then restart your computer.
Plug and Play Configuration Error —
1. Turn your computer off, unplug it from the electrical outlet, and then remove all but one of the cards.
2. Plug in your computer and reboot it.
3. If the message reappears, the installed card might be malfunctioning. If the message does not reappear, turn off the computer and
reinsert one of the other cards.
4. Repeat this process until you identify which card is malfunctioning.
Read fault —
Requested sector not found —
Reset failed —
See Drive Problems.
Sector not found —
Run the Windows error-checking utility to check the file structure on the floppy disk or hard drive. See Windows Help for instructions.
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If a large number of sectors are defective, back up the data (if possible), and then reformat the floppy disk or hard drive.
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Seek error — See Drive Problems.
Shutdown failure — Run the Dell Diagnostics (see
Time-of-day clock stopped —
Time-of-day not set —
Enter system setup (see Entering System
Battery.
Timer chip counter 2 failed — Run the Dell Diagnostics (see
Dell Diagnostics).
Replace the floppy disk with one that has a bootable operating system or remove the floppy disk from
Contacting Dell).
Dell Diagnostics).
Setup) and correct the date or time. If the problem persists, replace the battery (see
Dell Diagnostics).
Close all windows and open the program that you want to use.
Turn your computer off, connect the USB keyboard
Replacing the