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3-6 Troubleshooting and Diagnostics HP OmniBook 4100/4150
Symptom Call Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Does not boot from
floppy drive
Check floppy drive contacts.
Try using alternate
connection (with or without
floppy cable).
Check boot order in BIOS
Setup.
Check that floppy boot is
enabled in BIOS Setup.
Floppy drive or
contacts.
Floppy cable.
Motherboard.
Error message
such as “Invalid
system disk” or
“Auto IDE error”
Check for a disk in floppy
drive.
Remove and reinsert hard
drive.
Check boot order in BIOS
Setup.
Hard drive contacts.
Hard drive.
If unit boots from floppy drive,
check for corrupt files on
hard drive, reload hard drive,
replace hard drive.
Sluggish startup or
shutdown
Run ScanDisk and Disk
Defragmenter to check and
optimize the hard drive.
Delete temporary and
unneeded files.
Use same suggestions
shown at left.
Password has been
forgotten
Verify proper ownership, then
follow the removal procedure
with the owner and log the
appropriate data—see page
5-1.
The user must call Technical
Support and provide proof of
ownership. Password
removal is restricted to
certain sites. See page 5-1.
Power/Battery
Short battery
operating time
Turn down display
brightness.
Check power management
settings in BIOS Setup. Try
the default settings.
For an OmniBook 4150B,
shut down and restart. During
boot at the F2 prompt, press
F6. This starts a process that
recalibrates the battery
gauge, possibly inproving
operating time. When the
discharge cycle ends, you
may have to unplug and
reconnect the ac adapter to
begin recharging.
Inform user that certain
applications can cause
excess power usage. (User
can get power monitor from
www.intel.com and monitor
CPU load.)
Some PC cards (PCMCIA)
draw power even while not in
use.
Heavy modem use can affect
battery operating time.
Battery.
Motherboard.
Battery capacity often
decreases after a year or
more.
For an F1629A OmniBook
4150† with certain serial
numbers between
TW84257202 and
TW84358133, check the
CPU module to see if it must
be replaced—see Service
note 4150-01.
Does not run on
battery, empty
battery indication
Check battery contacts. If
available, try another battery.
Battery or contacts.
Motherboard.