compaq evo n610c and evo n600c User Manual

Troubleshooting
Maintenance and Service Guide2–21
Flowchart 2.11 - No OS Loading from Hard Drive, Part 2
Continued from
Flowchart 2.10,
No OS Loading 
from Hard Drive, 
Part 1.
Reseat
hard drive.
Done CD or
diskette in
drive?1. Replace hard 
drive.
2. Replace system 
board.
Go to
Flowchart 2.13,
No OS Loading 
from Diskette 
Drive.
Load OS using 
Restore CD (if 
applicable). Format hard drive 
and bring to a 
bootable C: 
prompt.Create partition, 
then format hard 
drive to bootable 
C: prompt.
Boot
from...

2–22Maintenance and Service Guide
Troubleshooting
Flowchart 2.12 - No OS Loading from Hard Drive, Part 3
Y
System
files on hard
drive? Continued from 
Flowchart 2.11,
No OS Loading 
from Hard Drive,
Part 2.
Clean virus.
Done
N
Install OS
and reboot.
Virus
on hard
drive?OS
loading from
hard drive?
Y
NY
N
Y
N
Diagnostics
on diskette?Replace
hard drive.
Run diagnostics
and follow
recommendations. Run SCANDISK 
and check for
bad sectors.
Can bad
sectors
be fixed?Replace
hard drive.
YN
YN
Fix bad
sectors.Boot...

Troubleshooting
Maintenance and Service Guide2–23
Flowchart 2.13 - No OS Loading from Diskette Drive
Done
Y
N
Reseat
diskette drive. OS not loading
from
diskette drive.
Done
Y
YY Y
Y
Y Y N
N
N NN
NN
OS
loading?
Nonsystem
disk message?Bootable
diskette
in drive?Install bootable
diskette and
reboot computer.
Check diskette
for system files.
Try different 
diskette.
1. Replace 
diskette drive.
2. Replace system 
board. Nonsystem
disk error?
OS
loading? Boot
from another
device?
Enable drive
and cold boot...

2–24Maintenance and Service Guide
Troubleshooting
Flowchart 2.14 - No OS Loading from CD- or 
DVD-ROM Drive
Clear CMOS. 
Refer to 
Section 1.3, 
“Clearing a 
Password,” for 
instructions.
Y
Done
N
Bootable
disc in
drive? Disc
in drive? No OS
loading from
CD- or
DVD-ROM Drive.Install bootable
disc and
reboot
computer.
Go to
Flowchart 2.17,
Nonfunctioning
Device.
Go to
Flowchart 2.17,
Nonfunctioning
Device. Install
bootable disc.
Boots from
CD or DVD?
Boots from
CD or DVD?Try another
bootable disc....

Troubleshooting
Maintenance and Service Guide2–25
Flowchart 2.15 - No Audio, Part 1
No audio.
N
Notebook in 
docking station
(if applicable)?Internal
audio?
Audio? Done
Undock
Audio? Done Turn up audio 
internally or 
externally.
Go to
Flowchart 2.16,
No Audio, Part 2.
Go to
Flowchart 2.16,
No Audio, Part 2.
Go to
Flowchart 2.17,
Nonfunctioning
Device.Replace the following docking station 
components one at a time as applicable. 
Check after each change.
1. Reseat docking station audio cable.
2. Replace...

2–26Maintenance and Service Guide
Troubleshooting
Flowchart 2.16 - No Audio, Part 2
YN
Continued from 
Flowchart 2.15,
No Audio, Part 1.
Reload
audio drivers. Audio
driver in OS
configured?
Audio?
Y Y
Y N N N
Correct
drivers for
application?
Connect to
external
speaker.Load drivers and
set configuration
in OS.
Audio? Done Replace audio 
board and 
speaker 
connections in 
notebook (if 
applicable).
1. Replace internal speakers.
2. Replace audio board 
(if applicable).
3. Replace system board....

Troubleshooting
Maintenance and Service Guide2–27
Flowchart 2.17 - Nonfunctioning Device
Done
Any physical
device detected?
Y
N
Unplug the nonfunctioning device 
from the notebook and inspect cables 
and plugs for bent or broken pins or 
other damage.
Reseat 
device.
Clear
CMOS.
DoneFix or
replace
broken item. Nonfunctioning
device.
Reattach device.
Close notebook,
plug in power,
and reboot.
Device
boots
properly?Go to
Flowchart 2.9,
No OS Loading.
Device
boots
properly? Possible bad hard 
drive. Replace...

2–28Maintenance and Service Guide
Troubleshooting
Flowchart 2.18 - Nonfunctioning Keyboard
Y
N
OK? Keyboard
not operating 
properly.
External
device
works?Replace
system
board.
Replace
system
board. Connect notebook 
to good external 
keyboard.
Reseat internal 
keyboard 
connector (if 
applicable).
Replace internal 
keyboard or 
cable.
OK?
Y N
Y
N
DoneDone
279362-001.book  Page 28  Monday, July 8, 2002  11:49 AM 

Troubleshooting
Maintenance and Service Guide2–29
Flowchart 2.19 - Nonfunctioning Pointing Device
Y
N
OK? Pointing device
not operating 
properly.
External
device
works?Replace
system
board.
Replace
system
board. Connect notebook 
to good external 
pointing device.
Reseat internal 
pointing device 
connector 
(if applicable).
Replace internal 
pointing device or 
cable.
OK?
Y N
Y
N
DoneDone
279362-001.book  Page 29  Monday, July 8, 2002  11:49 AM 

2–30Maintenance and Service Guide
Troubleshooting
Flowchart 2.20 - No Network or Modem Connection
Y
Disconnect all 
power from
the notebook
and open.
No network
or modem 
connection.
N
Done Digital
line?
Network
or modem jack 
active?Replace jack or 
have jack 
activated.
Connect
to nondigital
line.
NIC/modem 
configured in OS?Reload
drivers and 
reconfigure.
Reseat 
NIC/modem (if 
applicable).Replace 
NIC/modem (if 
applicable).
Replace
system
board.OK?
OK? Done
N N
N N Y
Y Y
Y
279362-001.book  Page 30...