Illustrated Parts & Service Map HP ProOne 400 G1 All-in-One Business PC
HP ProOne 400 G1 All-in-One 751759-001 page 2
Password Security
Establishing a Setup or Power-On password:
1. Turn on or restart the computer.
2. As soon as the computer turns on, press the Esc key while “Press the ESC key for Startup
Menu” message is displayed at the bottom of the screen.
3. Press the F10 key to enter Computer Setup.
4. To establish Setup password, select Security > Setup Password and follow the
instructions.
- or -
To establish a Power-On password, select Security > Power-On Password and follow the
instructions on the screen
5. Before exiting, click File > Save Changes and Exit.
Changing a Setup or Power-On password:
1. Turn on or restart the computer.
To change the Setup password, go to step 2.
To change the Power-on password, go to step 3.
2. To change the Setup password, as soon as the computer turns on:
- Press the Esc key while “Press the ESC key for Startup Menu” message is displayed.
- Press the F10 key to enter Computer Setup.
3. 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.
4. Press Enter.
The new password will take effect the next time the computer is restarted.
Deleting a Power-On or Setup password
1. Turn on or restart the computer.
To delete the Setup password, go to step 2.
To delete the Power-On password, go to step 3.
2. To change the Setup password, as soon as the computer turns on:
- Press the Esc key while “Press the ESC key for Startup Menu” message is displayed.
- Press the F10 key to enter Computer Setup.
3. When the key icon appears, type your current password followed by a slash (/) or alternate
delimiter character as shown. Example: currentpassword/
4. Press Enter.
Clearing CMOS
1. Turn off the computer and disconnect the power cord from the power outlet.
2. Remove the rear cover.
3. On the system board, press and hold the CMOS button for 5 seconds.
4. Replace the chassis access panel and reconnect the power cord.
5. Turn on the computer and allow it to start.
Miscellaneous Parts
1 Heat sink 754085-001
2 Fan/blower 754086-001
3 Speakers (left and right) 754090-001
* HP Ultraslim Keyed Cable Lock 703372-001
* Hard drive removable frame carrier 732060-001
* Card reader cover (for use in models without a card reader) 754075-001
* Hard drive carrier, 2.5-inch to 3.5-inch 703597-001
* Mouse, washable 724795-001
* Mouse, wireless 674317-001
* Mouse, USB, optical 674316-001
* Mouse, USB, laser 674318-001
* Webcam cover for models without a webcam 754074-001
* Antenna kit 754088-001
*Not shown
Mass Storage Devices (not illustrated)
Optical drives:
Blu-ray writer (BD-RE) drive 719157-001
DVD-ROM drive 608394-001
DVD±RW drive 657958-001
Optical drive bezel (for use in models without an optical drive) 754073-001
Hard drives/solid-state drives (SSDs):
2 TB, 7200 rpm hard drive 616608-001
1 TB, 7200 rpm hard drive 621418-001
1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD 724937-001
500 GB, 7200 rpm hard drive, 2.5-inch 686217-001
500 GB, 7200 rpm, hard drive, 2.5-inch, SSHD 724938-001
500 GB, 7200 rpm hard drive, 2.5-inch, SATA-6G 754078-001
320 GB, 7200 rpm hard drive, 2.5-inch 639135-001
320 GB, 7200 rpm hard drive, 2.5-inch, SATA-6G 754077-001
256 GB solid-state drive (SSD), self-encrypting (SED) 680020-001
180 GB solid-state drive (SSD), SATA 6.0, MLC 754076-001
180 GB solid-state drive (SSD), SATA 6.0 696622-001
128 GB solid-state drive (SSD) 728559-001
128 GB solid-state drive (SSD), Self-encrypting Drive (SED), SATA 6.0 746140-001
120 GB solid-state drive (SSD), SATA 6.0, MLC 756459-001
Hard drive removable frame carrier 732060-001
Adapter, 2.5” to 3.5” hard drive 703597-001
Diagnostic LEDs
LED Color LED Activity State/Message
Power White On Computer on
Power White 1 blink every 2 seconds Normal Suspend Mode
Power Red 2 blink every second followed
by a 2 second pause
CPU thermal shutdown
Power Red 3 blinks, 1 blink every second
followed by a 2 second pause
Processor not installed
Power Red 4 blinks, 1 blink every second
followed by a 2 second pause
Power failure (power supply overload)
Power Red 5 blinks, 1 blink every second
followed by a 2 second pause
Pre-video memory error
Power Red 6 blinks, 1 blink every second
followed by a 2 second pause
Pre-video graphics error
Power Red 7 blinks, 1 blink every second
followed by a 2 second pause
System board failure (ROM)
Power Red 8 blinks, 1 blink every second
followed by a 2 second pause
Invalid ROM based on Checksum
Power Red 9 blinks, 1 blink every second
followed by a 2 second pause
System powers on but is unable to
boot
Power Red 11 blinks, 1 blink every sec-
ond followed by a 2 second
pause
Current processor does not support a
feature previously enabled.
Power Red 12 blinks, 1 blink every sec-
ond followed by a 2 second
pause
MXM thermal shutdown
none none System does not power on
and LEDs are not flashing
System unable to power on
Common POST Error Messages
Screen Message Probable Cause Recommended Action
101-Option ROM Error System ROM checksum
error.
1. Verify ROM, reflash if required
2. Clear CMOS memory, reboot
3. Replace system board
103-System Board
Failure
DMA, timers 1. Clear CMOS memory.
2. Replace system board.
164-Memory Size Error
and
201-Memory Error
Incorrect memory configu-
ration
1. Run Setup (F10).
2. Check DIMMs for proper
seating, type, compatibility.
3. Remove DIMMs singularly and
reboot to isolate faulty DIMM.
4. Replace system board.
214-DIMM Configuration
Warning
Populated DIMM configura-
tion is not optimized
1. Check DIMMs for proper
seating, type, compatibility.
2. Rearrange the DIMMs so that
each channel has the same
amount of memory.
301-, 304-Keyboard error Keyboard failure. Check kybd connection or keys.
Check connector for bent or miss-
ing pins. Replace kybd. If 304,
possible system board problem.
501-Display Adapter Fail-
ure
Graphics display controller. 1. Reseat graphics card.
2. Clear CMOS.
3. Replace graphics card.
1720-SMART Hard Drive
Detects Imminent Failure
Hard drive is about to fail.
1. Determine if hard drive is giving
correct error message. Enter
Computer Setup and run the
Drive Protection System test
under
Storage > DPS Self-test
.
2. Apply hard drive firmware
patch if applicable.
3. Back up contents and replace
hard drive.