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3-10 Troubleshooting and Diagnostics Service Manual
Symptom Call Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Local area of dark
or light discoloration
visible when display
is on.
Caused by excessive
pressure applied to
area on screen.
Declared to be caused by
customer abuse.
External display
does not work.
Check connections.
Press Fn+F5 several times.
Try display on another
computer.
External display.
Motherboard.
Hard disk
Hard disk never
spins.
Check power source.
Remove and reinstall hard
drive. Check connector.
Hard drive or
connector.
Motherboard.
If drive case is damaged,
drive may not operate
properly.
Hard disk makes
clunking or
scratching noise.
Back up disk immediately.
Was notebook or drive
dropped?
Hard drive. Check notebook and drive for
evidence of customer abuse.
Hard disk makes
buzzing or whining
noise.
Back up disk immediately.
Check hard disk installation.
Check for alternate noise
sources, such as PCMCIA
drive or fan.
Depends on noise
source.
Files corrupted. Run virus scan program.
Check hard disk using Tools
tab in disk’s Properties sheet.
Test hard disk drive with
e-Diagtools diagnostics.
Back up files if possible, then
use Recovery CDs to
reformat hard disk and
reinstall factory software.
Disk capacity less
than normal.
Check hard disk using Tools
tab in disk’s Properties sheet.
Check partitions using
Control Panel, Administrative
Tools, Computer
Management under Storage.
Use Recovery CDs to
reformat hard disk and
reinstall factory software.
Hard drive.
Disk’s reported
capacity is less
than actual size
Hard disk allocates
approximately 20 MB to
diagnostic software. This
space is unavailable for other
uses, and not included in
hard disk capacity reported
by Windows.
Floppy drive
General problems. No response from floppy
drive.
Floppy drive.
Motherboard.
Make sure floppy drive is
installed and connected
correctly.