Failsafe Boot Block ROM
Error Conditions and Messages
The computer comes with a reprogrammable flash system ROM (read only memory). To
How It Is
upgrade the ROM, download the latest ROM BIOS image from the HP Web site (www.hp.com)
Feature
Purpose
Established
and follow the online GUI/instructions.
Floppy drive controller
Prevents the transfer of data to or from the
Setup Utilities
Your system ROM includes a Failsafe Boot Block that is protected during the flash process and
floppy drive.
allows the computer to be restarted in the unlikely event of an unsuccessful ROM flash.
Device Boot Disabling
Prevents booting from and or all of these
Setup Utilities
If the system detects an invalid system ROM during the boot sequence, the Failsafe Boot Block
devices: Internal or external USB, Internal
attempts to locate a valid BIOS image on removable media. To recover from the Boot Block
ODD, or Internal FDD
recovery mode complete the following steps:
Security Option
Prevents use of computer until password is
Setup Utilities
entered. Can apply to both initial startup and
Boot Block Recovery
restart.
1. Remove any bootable media from the computer and turn off power.
BIOS Write Protect
Restricts ability to change ROM BIOS with-
Setup Utilities.
out approval.
2. Insert a flash drive or CD containing the ROM BIOS.
USB Controller
Allows you to disable or enable all USB
Setup Utilities
3. Turn on power to the system.
devices.
4. The system will automatically flash the ROM. After a successful flash, the system will either
automatically restart or prompt the user to unplug the unit, wait 5 seconds, reattach the power
Diagnostic LEDs
cord, and then press the power button.
LED
Color
LED Activity
State/Message
Password Security
Power
Green
On
Computer on
Power
Green
1 blink every 2 seconds
Normal Suspend Mode
Establishing a Setup password:
Power
Red
1 blink every second followed
CPU thermal shutdown
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down >
by a 2 second pause
Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Power
Red
3 blinks, 1 blink every second
Processor not installed
followed by a 2 second pause
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
when prompted, a restart will be necessary.
Power
Red
4 blinks, 1 blink every second
Power failure (power supply overload)
3. Select Security > Setup Password and follow the instructions on the screen.
followed by a 2 second pause
4. Before exiting, click File > Save Changes and Exit.
Power
Red
5 blinks, 1 blink every second
Pre-video memory error
followed by a 2 second pause
Establishing a Setup password:
Power
Red
6 blinks, 1 blink every second
Pre-video graphics error
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down >
followed by a 2 second pause
Restart.
Power
Red
7 blinks, 1 blink every second
System board failure (ROM
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
followed by a 2 second pause
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
Power
Red
8 blinks, 1 blink every second
Invalid ROM based on Checksum
when prompted, a restart will be necessary.
followed by a 2 second pause
3. Select Security > Power-On Password and follow the instructions on the screen.
Power
Red
9 blinks, 1 blink every second
System powers on but is unable to boot
Before exiting, click File > Save Changes and Exit.
followed by a 2 second pause
Changing a password:
Power
Red
10 blinks, 1 blink every second Bad option card
followed by a 2 second pause
1. Turn on or restart the computer. If you are in Windows, click Start> Shut Down > Restart.
none
none
System does not power on and
System unable to power on
To change the Setup password, go to step 2.
LEDs are not flashing
To change the Power-on password, go to step 3.
2. 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
Common POST Error Messages
necessary.
3. When the key icon appears, type your current password, a slash (/) or alternate de-limiter
Screen
character, your new password, another slash (/) or alternate delimiter character, and your new
Message
Beeps
Probable Cause
Recommended Action
password again as shown:
101-Option
1L, 1S
1. System ROM checksum
1. Verify ROM, reflash if required
ROM Error
error.
2. Remove suspected card, reboot
current password/new password/new password.
2. Expansion card.
3. Clean CMOS memory, reboot
NOTE: Type the new password carefully since the actual characters do not appear on the
3. CMOS corruption.
4. Replace system board
screen.
4. System board.
4. Press ENTER.
103-System
none
DMA, timers
1. Clear CMOS memory.
The new password will take effect the next time the computer is restarted.
Board
Failure
2. Remove expansion board.
Deleting a password
3. Replace system board.
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
164-
2S
Incorrect memory configu-
1. Run Setup (F10).
Memory Size
ration
To delete the Setup password, go to step 2.
Error
2. Check DIMMs for proper
To delete the Power-On password, go to step 3.
and
seating, type, and HP
201
compatibility.
2. To change the Setup password, as soon as the computer is turned on, press F10 when the
Memory Error
monitor light turns green to enter Computer Setup. Press Enter to bypass the title screen, if
3. Remove DIMMs singularly and
necessary.
reboot to isolate faulty DIMM.
3. When the key icon appears, type your current password followed by a slash (/) or alternate
214-DIMM
none
Populated DIMM configura- Rearrange the DIMMs so that
delimiter character as shown. Example: currentpassword/
Configuration
tion is not optimized
each channel has the same amount
Warning
of memory.
4. Press Enter.
301-, 304-Key-
none
Keyboard failure.
Check keyboard connection or
board error
keys. Replace keyboard. If 304,
Security Features
possible system board problem.
NOTE:
501-Display
1L, 2S
Graphics controller.
1. Reseat graphics card.
For more information about Setup Utilities refer to the Computer Setup Menu on the previous
Adapter Failure
2. Check monitor connection.
page or in the Service Reference Guide.
3. Replace graphics card.
Diagnostic Functions
1720-SMART
none
Hard drive is about to fail.
Run drive protection system test if
Hard Drive
available. Check for firmware
Diagnostic functions are provided by the Setup Utility (in system ROM) and by Insight Diag-
Detects Immi-
patch for erroneous error message.
nent Failure
nostics. Insight Diagnostics provides detailed system information including:
1796-SATA
none
One or more SATA devices
Ensure SATA0 and SATA1 are
•
Processor type and speed
Cabling Error
are improperly attached.
used before any other SATA con-
•
Memory amount, mapping, and integrity
nectors.
•
Hardware peripheral availability/settings
1801-Micro-
none
Processor not supported by
1. Upgrade BIOS to proper
•
Hard drive type, space used/available
code Patch
ROM BIOS.
version.
•
System identification, asset tracking
Error
2. Change the processor.
Insight Diagnostics may be found on the Documentation and Diagnostics CD that shipped with
NOTES: L = long, S = short
the computer. The tool may also be downloaded from the HP Web site using the following pro-
cedure:
Clearing CMOS
1. Go to www.hp.com
1. Shut down the system and disconnect the power cord from the power outlet.
2. Click the Software and Download driver link.
2. Remove the chassis access panel.
3. Enter the product number (for example, dc7700) in the text box and press the Enter key.
3. On the system board, press and hold the CMOS button for 5 seconds.
4. Select the specific product.
4. Replace the chassis access panel and reconnect the power cord.
5. Select the OS.
5. Turn on the computer and allow it to start.
6. Click the Diagnostics link.
7. Select HP Insight Diagnostics Offline Edition.
8. Select the proper language and click Download.
NOTE: The download includes instructions on how to create a bootable CD. The SoftPaq
number is SP33665 or later.
dc7700 Illustrated Parts & Service Map, SFF Chassis
435525-004
page 4

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