NEC VERSA UltraLite Service And Reference Manual page 71

Problem or Symptoms
Battery power does not last
long
Notebook halts during boot
sequence
I/O processing malfunctions
USB diskette drive does not
work
Hard drive malfunction
USB CD-ROM drive
malfunction
Diagnostics
Corrective Actions
Make sure that the power management options under BIOS Setup are
enabled and set properly.
Recharge the secondary battery for at least 4.5 hours before using.
Discharge and recharge the secondary battery twice.
Replace the secondary battery.
Check condition of the selected bootload device (diskette or hard drive)
for bad boot track or incorrect O/S files.
Try booting from a new boot diskette and recopy or repartition the hard
drive.
Check for any BIOS error messages on the display.
Replace the main board.
Check the connections of all internal devices.
Replace the main board.
Check if the diskette drive option is set properly in BIOS Setup.
Check if the diskette USB cable is connected properly.
Check that the diskette is not faulty.
Replace the USB diskette drive.
Replace the main board.
Check if the hard drive is set properly in BIOS Setup.
Check that the hard drive interface cable is firmly connected to P9 on
the main board and that the cable is firmly connected to the hard drive.
Try reseating the interface cable to the main board and to the hard disk
drive.
Replace the hard drive.
Replace the main board.
Check if the drive is set properly in BIOS Setup.
Check if the drive has the latest software driver (check the internet for
the vendor's latest driver).
Check that the USB cable is connected properly.
Check the drive with a different CD.
Troubleshooting 7-7