Illustrated Parts & Service Map
HP Compaq dx2450 Microtower Business PC
© 2008 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. HP shall not be liable for
technical or editorial errors or omissions contained herein. AMD, Athlon,
Sempron, Phenom are trademarks or registered trademarks of the AMD Corporation and its subsidiaries in the U. S. and other countries.
Document Number 484989-001.
1st Edition March 2008.
Cables
1
Power switch/LED cable assembly
2
SATA cable, 6.5 inch, latch on end
464574-001
448670-001
*
SATA cable, 10 inch, 2 straight ends
392307-001
*
SATA hard drive cable, 4 inch, latch on end
449283-001
*
DMS-59 to dual VGA cable
463023-001
*
Modem cable - see modem cable adapters in Misc Parts section
198220-001
*
Adapter, DVI-I to VGA
202997-001
*
Diskette drive cable
395967-001
*Not shown
Keyboards (not illustrated)
PS/2, Basic
USB, Basic
Key Specifications
435302-xxx
435382-xxx
Processor Type
AMD Athlon 64, Sempron-64, Phenom
Arabic
-171
Italian
-061
RAM Type
DDR2-SDRAM DIMMs, PC2-6400 (800 MHz) non-ECC
Belgian
-181
LA Spanish
-161
Maximum RAM Supported
4 GB
BHCSY
-B41
Norwegian
-091
Expansion Slots
•
•
•
Czech
-221
Portuguese
-131
Danish
-081
Romanian
-271
Graphics Adapter
Integrated NVIDIA GeForce 6150SE Graphics
Finnish
-351
Russian
-251
Drive Support
•
•
•
French
-051
Slovakian
-231
French Arabic
-DE1
Spanish
-071
I/O Interfaces
1 PCIe-x16
2 PCIe-x1
1 PCI 2.3 (full height)
(2) 5.25-inch external bays
(1) 3.5-inch external bay
(2) 3.5-inch internal bays
USB 2.0 (8), RJ-45, audio in (2), audio out, PS/2 ports (2),
VGA
Spare Parts
French Canadian
-121
Swedish
-101
German
-041
Swiss
-111
Greek
-151
Thai
-281
Hebrew
-BB1
Turkish “Q”
-141
Hungarian
-211
U.S.
-001
International
-B31
U.K.
-031
System Unit
1
Front bezel
464575-001
2
Power supply, 300W, PFC
463317-001
2
Power supply, 300W, non-PFC
463318-001
3
Access panel
464597-001
*
3.5-inch bezel blank - diskette drive
459913-001
*
5.25-inch bezel blank
335937-001
* Not shown
DIMM Population
Item
Description
1
DIMM socket XMM1, Channel A (populate first)
Socket Color
Black
2
DIMM socket XMM2, Channel A
Blue
3
DIMM socket XMM3, Channel B (populate second)
Black
4
DIMM socket XMM4, Channel B
Blue
NOTE: A DIMM must occupy the XMM1 socket.
dx2450 Illustrated Parts & Service Map
484989-001
page 1
Standard and Optional Boards (not illustrated)
System board with thermal grease and alcohol pad
462798-001
Memory modules:
512 MB, PC2-6400, CL6
418952-001
1 GB, PC2-6400, CL6
418951-001
2 GB, PC2-6400, CL6
457624-001
Other boards:
Belkin 802.11a/g WLAN adapter for use in the United States and most of the
world
Miscellaneous Parts
1
Front I/O + USB assembly
448667-001
2
Heatsink with fan, alcohol pad, and thermal grease (does not include
backplate)
464576-001
3
Speaker
463316-001
*
Chassis fan
449207-001
*
Real-time clock battery
153099-001
*
Rubber foot (4 ea)
370708-001
*
Media card reader, 3.5-inch
407187-001
*
Media card reader, 3.5-inch, 1394 USB
480032-001
*
USB powered speakers
466618-001
*
Laser mouse
459821-001
*
2-Button, USB, optical with scroll wheel
390938-001
*
2-Button, PS/2, optical with scroll wheel
417966-001
Miscellaneous screw kit, includes:
414180-001
*
M3 x 5mm hi top, taptite, (8 ea) (247348-001)
*
#6-32 x 1/4 Hi top, taptite, T15 (14 ea) (192308-001)
*
#6-32 x 5/16 Hi top, taptite, T15 (4 ea) (192308-002)
*
#6-32 x 3/16 Hi top, taptite, T15 (6 ea) (192308-003)
*
Countersunk, flat head plastite (8 ea) (247481-001)
*
Thumbscrew (2 ea) (368224-002)
*
#8 x5 /16 plastite, shoulder screw (4 ea) (334248-001)
*
#6-32 x 1/4 taptite, T15 (12 ea) (101517-067)
*
Screwlock, external tooth (2 ea) (106902-001)
*
#6-32 x 3/16 taptite, T15 (1 ea) (101517-066)
*
#8 x5 /16 plastite, T15 (1 ea) (334248-002)
*
#6-19 x 1/4 plastite, T15 (1 ea) (101346-067)
391866-002
Belkin 802.11a/g WLAN adapter for use in the rest of the world
391866-001
ATI HD X2400, PCIEx16, DMS-59 and TV outputs, 256MB graphics adapter
462477-001
Adapter, PCI, serial/parallel
321722-001
56K modem, Agere 2006 PCI Hi-Speed, FH
398661-001
nVidia GeForce 8400 GS 256-MB video card with DMS-59 and TV
(S-Video) outputs, LP
445743-001
HP FireWire IEEE 1394 PCI card, 2 external, 1 internal port, FH
441448-001
Intel Pro 1000 PT Gigabit PCIe NIC, FH
398754-001
AMD Athlon 64 processor with alcohol pad and thermal grease
X2 5400+, 2.8 GHz, 1-MB L2 cache
465312-001
X2 5200+, 2.7 GHz, 2x512-KB L2 cache
465302-001
X2 5000+ 2.6 GHz, 2x512-KB L2 cache
465301-001
X2 4450B, 2.3 GHz, 1-MB L2 cache
465303-001
LE-1640, 2.6GHz, 1-MB L2 cache
465304-001
AMD Sempron-64 processor with alcohol pad and thermal grease
1300, 2.3 GHz, 512-KB L2 cache
458069-001
1250, 2.2 GHz, 512-KB L2 cache
458068-001
1200, 2.1 GHz, 512-KB L2 cache
460341-001
System Board
Modem Cable Adapters (not illustrated) (use with 198220-001)
Australia
417561-011
Italy
316904-065
Belgium
316904-181
Netherlands
316920-335
Czech
234963-225
Poland/Russia
316904-241
Germany
316904-041
Scandinavia
382848-DH1
Greece
316904-151
South Africa
316904-AR1
France
316904-051
Switzerland
417562-111
Hungary
234963-215
Turkey
316904-141
Israel
316904-BB1
U.K.
158593-035
*Not shown
Mass Storage Devices (not illustrated)
Diskette drive with bezel
431452-001
16X SATA DVD±RW and CD-RW drive with LightScribe
447310-001
System Board Connectors and Jumpers (position of some untitled
components may vary in location)
16X SATA DVD-ROM drive
419496-001
LAN+USB
RJ-45 over dual USB
F_PANEL
Power button/LED
48X CD-RW/DVD-ROM combo drive
419497-001
1394-USB
Double stack USB
SPEAKER
Internal speaker
500 GB SATA hard drive
457909-001
PCI 1
PCI slot 1
VGA DVI
VGA connector
250 GB, 7200-RPM SATA hard drive, 8-MB cache
449980-001
PCIE_X1_1
PCIe X1, slot 1
CPU_FAN
CPU fan
160 GB, 7200-RPM SATA hard drive, 8-MB cache
449979-001
PCIE_X1_2
PCIe X1, slot 2
CHASSIS_FAN System fan
80 GB, 7200-RPM SATA hard drive, 8-MB cache
449978-001
PCIE X16
PCIe X16 slot
CMOS+PW
Clear CMOS
KB+MS
Double stack keyboard/mouse
BATTERY
Real-time-clock battery
SATA0 SATA3
Optical drive connectors
DIMM 1 DIMM 4
Memory slots
AUDIO
Double stack audio connector
PROCESSOR
Processor socket
ATXPOWER
Main power
F_USB1
Front USB
FLOPPY
Diskette drive
F_USB2
Media card reader
F_AUDIO
Front audio
ATX_CPU
CPU power
dx2450 Illustrated Parts & Service Map
484989-001
page 2
Setup Utility
POST Audible Codes (continued)
Basic system information is maintained in the Setup Utility held in the system ROM, accessed
by pressing the F10 key when prompted (on screen) during the boot sequence.
Beeps
Meaning
3 short
Flashing not ready (missing
Upgrade the BIOS to proper version.
utility or BIOS image file, etc.)
4 short
Flashing operation has failed
(checksum error, corrupted
image, etc.)
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently
added, remove it to see if the problem
remains.
4. Clear CMOS.
5. If the message disappears, there may
be a problem with the expansion card.
6. Replace the system board.
5 short
BIOS recovery was successful
No action required.
Computer Setup Menu
Heading
Option / Description
Main
System Time
Allows you to set system time.
System Date
Allows you to set system date.
Language
Allows you to select the language.
Floppy Diskette A
Allows you to set to Disabled, 1.44 MB 3.5”, Not Installed.
1st Drive
2nd drive
3rd Drive
4th Drive
Allow you to: view capacity, transfer mode, SATA speed,
NCQ. Also allows you to run HDD self-test for selected channel: SMART status check, SMART short self test, SMART
extended self test.
System Information
Allows you to view installed memory, memory banks 1-4,
BIOS revision, core version, model number, product number,
asset tag (press Enter to change).
Advanced
CPU Type
View only.
CPU Speed
View only.
Cache RAM
(L2)
View only.
Cache RAM
(L3)
View only - some models.
Power
Boot
Exit
Password Security
Establishing a Setup password using computer setup
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
when prompted, a restart will be necessary.
3. Select Security > Setup Password and follow the instructions on the screen.
4. Before exiting, click File > Save Changes and Exit.
Changing a Power-on or Setup password
Primary Video Allows you to select boot display device when more than 2
Adapter
video options are offered by system: PCI, PCI-Ex16, PCIEx1, Onboard.
Onboard
Video Memory Size
Recommended Action
32 MB, 128 MB, 256 MB.
PS/2 Mouse
Disable/enable/auto detect.
USB Legacy
Mode Support
Disable/enable.
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
2. If you want to change the Setup password, as soon as the computer is turned on, press F10
when the monitor light turns green to enter Computer Setup. Press Enter to bypass the title
screen, if necessary.
3. If you want to change the Power-On password, when the key icon appears, type your current
password, a slash (/) or alternate delimiter character, your new password, another slash (/) or
alternate delimiter character, and your new password again as shown:
current password/new password/new password.
NOTE: Type the new password carefully since the characters do not appear on the screen.
Onboard LAN
Disable/enable onboard LAN controller.
Onboard LAN
Boot ROM
Disable/enable the boot ROM of the onboard LAN chip.
SATA Controller
Allows you to set Disabled, SATA1, SATA1+2
Onboard
Audio
Auto/disable/enable.
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
Internal
Speaker
Disable/enable.
2. To delete the Setup password, as soon as the computer is turned on, press F10 when the
monitor light turns green to enter Computer Setup. Press Enter to bypass the title screen, if
necessary.
Supervisor
Password
Allows you to change the supervisor password.
3. To delete the Power-on password, when the key icon appears, type the current password
followed by a slash (/) or alternate delimiter character as shown: currentpassword/
User Password
Allows you to change the user password.
4. Press Enter.
After AC
Power Failure
Allows you to select system restart behavior after power loss:
Auto, Power On, Stay off.
XD
Disable/enable XD bit.
2. Move the jumper cap on jumper CLPWD to pins 1-2.
Boot-time
Diagnostic
Screen
Disable/enable POST diagnostic message display.
3. Plug in the power cord and turn on the PC.
1st Boot
Device, 2nd
Boot Device,
3rd Boot
Device, 4th
Boot Device
Allows you to specify which device groups will boot first,
second, third, and fourth or to disable any
of the four: Floppy group, CD-ROM group, Hard drive group,
Network Boot group. MS-DOS drive lettering assignments
maybe apply after a non-MS-DOS operating system has
started.
Floppy Group
Boot Priority
Specifies boot device priority within removable devices.
CD-ROM
Boot Priority
Specifies boot device priority within CD/DVD drives.
Hard Drive
Boot Priority
Specifies boot device priority within hard drives.
Network
Group Boot
Priority
Specifies boot device priority within bootable network
devices.
Exit Saving
Changes
Press Enter to exit saving changes.
Exit Discarding Changes
Press Enter to exit discarding changes.
Load Setup
Defaults
Press Enter to load setup defaults.
Discard
Changes
Press Enter to discard changes.
Save Changes
Press Enter to save changes.
4. Press Enter.
The new password will take effect the next time the computer is restarted.
Deleting a Power-on or Setup password
Clearing Password using the Jumper
1. Turn off the PC and unplug the the power cord.
4. Hold down the F10 key during the boot process and enter BIOS setup to enter any custom
BIOS settings.
5. After changing or clearing the BIOS passwords, turn off the PC, and then replace the jumper
onto pins 2-3.
HP Insight Diagnostics
The HP Insight Diagnostics utility allows you to view information about the hardware configuration of the computer and perform hardware diagnostic tests on the subsystems of the computer. The utility simplifies the process of effectively identifying, diagnosing, and isolating
hardware issues.
The Survey tab is displayed when you invoke HP Insight Diagnostics. This tab shows the current configuration of the computer. From the Survey tab, there is access to several categories of
information about the computer. Other tabs provide additional information, including diagnostic
test options and test results. The information in each screen of the utility can be saved as an html
file and stored on a diskette or USB HP Drive Key.
Use HP Insight Diagnostics to determine if all the devices installed on the computer are recognized by the system and functioning properly. Running tests is optional but recommended after
installing or connecting a new device.
You should run tests, save the test results, and print them so that you have printed reports available before placing a call to the Customer Support Center.
Insight Diagnostics may be found on the Documentation and Diagnostics CD that shipped with
the computer. The tool may also be downloaded from the HP Web site using the following procedure:
1. Go to www.hp.com
2. Click the Software & Download driver link.
3. Enter the product number (for example, dx2400) in the text box and press the Enter key.
4. Select the specific product.
5. Select the OS.
POST Audible Codes
6. Click the Diagnostics link.
Beeps
Meaning
Recommended Action
7. Select HP Insight Diagnostics Offline Edition.
1 short, 1 long
Bad memory or memory configuration error
Check that the memory modules have
been installed correctly and that proper
modules are used.
8. Select the proper language and click Download.
2 short, 1 long
No graphics card installed or
graphics card initialization
failed.
For systems with a graphics card:
1. Reseat the graphics card. Power on
the system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics,
replace the system board.
3 short, 1 long
1 short
2 short
CPU configuration error or
invalid CPU detected before
graphics card initialized.
1. Upgrade the BIOS to proper version.
2. Change the processor.
No legacy floppy drive or optical drive found.
1. Check cable connections.
2. Run the Computer Setup utility and
ensure the device port is enabled.
No floppy diskette or CD
found.
1. Check the type of drive that you are
using and use the correct media type.
2. Replace the diskette or CD with a
new one.
dx2450 Illustrated Parts & Service Map
NOTE: The download includes instructions on how to create a bootable CD.
Clearing CMOS
1. Turn off the computer and any external devices, and disconnect the power cord from the
power outlet.
2. Remove the access panel.
3. Remove the RTC battery.
4. On the system board, move the jumper cap from pins 2-3 (Normal) to pins 1-2 (Clear
CMOS). Keep the cap on pins 1-2 for about 5~10 seconds, and then move the cap back to
pins 2-3.
5. Replace the access panel, external devices, reconnect the power cord, and then turn on the
computer.
6. Hold down F1 during the boot process to enter BIOS setup and re-enter data.
CAUTION: Other than when clearing CMOS, never remove the cap from the default position.
Removing the cap will cause system boot failure.
484989-001
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