NEC ES1400, User Manual, Page: 107 / 188

Problem Solving 5-5
After System Has Been Running Correctly
Problems that occur after the system hardware and software have been
running correctly often indicate equipment failure. However, many
situations that are easy to correct can also cause such problems. If you
have problems after the system has been running correctly, check the
following:
„
If you are running the software from a diskette or CD-ROM, try a new
copy of the software.
„
If you are running the software from a hard disk drive, try running it
from a floppy. If the software runs correctly, there may be a problem
with the copy on the hard disk. Reinstall the software on the hard
disk drive and try running it again. Make sure all the necessary files
are installed.
„
If the problem recurs, you may need to reformat the hard disk drive.
The drive, the drive controller, or the system board may be defective.
„
If the problems are intermittent, there may be a loose cable, dirt in
the keyboard (if keyboard input is incorrect), a marginal power
supply, or other random component failures.
„
If you suspect that a transient voltage spike, power outage, or
brownout might have occurred, reload the software and try running it
again. Symptoms of voltage spikes include a flickering video display,
unexpected system reboots, and the system not responding to user
commands.
Note: Voltage spikes can corrupt or destroy data files on
the drive. If you are experiencing voltage spikes on the power
line, install a surge suppresser between the power outlet and
the system power cord.
If the problem recurs after you have checked and corrected all of the
above items, refer to “Additional Troubleshooting Procedures” in this
chapter.