compaq evo n115 User Manual

2–14Maintenance and Service Guide
Troub leshooting
Flowchart 2.12 - No OS Loading from Hard Drive, Part 3
Y
System
files on hard drive?
Continued from 
Section 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
N Y
N Y
N
Diagnostics
on diskette? Replace
hard drive.
Run diagnostics and follow
recommendations.
Run SCANDISK 
and check forbad sectors.
Can badsectors
be fixed? Replace
hard drive.
Y N
Y N
Fix bad
sectors....

Troub leshooting
Maintenance and Ser vice Guide 2–15
Flowchart 2.13 - No OS Loading from Diskette Drive
Done
Y
N
Reseat
diskette drive.
OS not loading
from
diskette drive.
Done
Y
Y Y
Y
Y
Y
YN
N
NN
N
N
N
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...

2–16Maintenance and Service Guide
Troub leshooting
Flowchart 2.14 - No OS Loading from CD- or
DVD-ROM Drive
Y
Done
N
Bootable
disc indrive?
Disc
in drive?
No OS
Loading from CD- or
DVD-ROM Drive. Install bootable
disc andreboot
computer.
Go to
Section 2.17,
Nonfunctioning Device.
Go to
Section 2.17,
Nonfunctioning Device.
Install
bootable disc.
Boots from
CD or DVD?
Boots from
CD or DVD? Try another
bootable disc.
Booting
from another device?
Booting order
correct?
Correct boot  order using
the setup...

Troub leshooting
Maintenance and Ser vice Guide 2–17
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
Section 2.16,
No Audio, Part 2.
Go to
Section 2.16,
No Audio, Part 2.
Go to
Section 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...

2–18Maintenance and Service Guide
Troub leshooting
Flowchart 2.16 - No Audio, Part 2
YN
Continued from 
Section 2.15,
No Audio, Part 1.
Reload
audio drivers.
Audio
driver in OS
configured?
Audio?
Y Y YN
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.
263816m1.book...

Troub leshooting
Maintenance and Ser vice Guide 2–19
Flowchart 2.17 - Nonfunctioning Device
Done
Any physical
device detected?
Y
N
Unplug the nonfunctioning device 
from the notebook, inspect cables 
and plugs for bent or broken pins or 
other damage.
Reseat 
device.
Clear
CMOS.
Done Fix or
replace
broken item.
Nonfunctioning
Device.
Reattach device. Close notebook, plug in power, and reboot.
Deviceboots
properly? Go to
Section 2.9,
No OS Loading.
Deviceboots
properly?
Possible bad hard 
drive. Replace...

2–20Maintenance and Service Guide
Troub leshooting
Flowchart 2.18 - Nonfunctioning Keyboard
Y
N
OK?
Keyboard
not operating  properly.
Externaldevice
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
263816m1.book  Page 20  Friday, January 25, 2002  2:14 PM 

Troub leshooting
Maintenance and Ser vice Guide 2–21
Flowchart 2.19 - Nonfunctioning Pointing Device
Y
N
OK?
Pointing device
not operating  properly.
Externaldevice
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
263816m1.book  Page 21  Friday, January 25, 2002  2:14 PM 

2–22Maintenance and Service Guide
Troub leshooting
Flowchart 2.20 - Network or Modem Connection
Y
Disconnect all 
power from
the notebook and open.
No networkor 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).
Replacesystem board. OK?
OK? Done
N
N
N
N
Y
Y
Y
Y
263816m1.book  Page 22...

Maintenance and Service Guide 3–1
3
Illustrated Parts Catalog
This chapter provides an illustrated parts breakdown and a 
reference for spare part numbers and option part numbers.
3.1 Serial Number Location
When ordering parts or requesting information, provide the 
computer serial number and model number located on the bottom 
of the computer (Figure 3-1).
Figure 3-1. Serial Number Location
263816m1.book  Page 1  Friday, January 25, 2002  2:14 PM