Failsafe Boot Block ROM, Password Security

Failsafe Boot Block ROM

The computer comes with a reprogrammable flash system ROM (read only memory). To upgrade the ROM, download the latest ROM BIOS image from the HP Web site (www.hp.com) and follow the online GUI/instructions.

Your system ROM includes a Failsafe Boot Block that is protected during the flash process and allows the computer to be restarted in the unlikely event of an unsuccessful ROM flash.

If the system detects an invalid system ROM during the boot sequence, the Failsafe Boot Block attempts to locate a valid BIOS image on removable media. To recover from the Boot Block recovery mode complete the following steps:

Boot Block Recovery

1.Remove any bootable media from the computer and turn off power.

2.Insert a flash drive or CD containing the ROM BIOS.

3.Turn on power to the system.

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 cord, and then press the power button.

Password Security

Establishing a Supervisor Password:

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 Boot > Setup Supervisor Password and follow the instructions on the screen.

4.Before exiting, click File > Save and Exit Setup.

Establishing a User Password:

1.Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

3.Select Boot > Set User Password and follow the instructions on the screen.

Before exiting, click File > Save and Exit Setup.

Changing a Password:

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.

3.When the key icon appears, type your current password

4.Select Boot > Set Supervisor (or user) Password.

5.Enter the new password (or nothing for no password) in the key icon and press Enter

The new password will take effect the next time the computer is restarted.

Deleting a Password

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.

3.When the key icon appears, type your current password

4.Select Boot > Set Supervisor (or user) Password.

5.Enter nothing for no password in the key icon and press Enter

The new password will take effect the next time the computer is restarted.

Clearing CMOS

1.Turn off the computer and any external devices, disconnect the power cord from the power outlet, and remove the access panel.

2.Locate, press, and hold the CMOS button in for five seconds.

3.Replace the access panel and connect the power cord to the power outlet.

4.Turn on the computer.

Error Conditions and Messages

		How It Is
Feature	Purpose	Established

Floppy drive controller	Prevents the transfer of data to or from the	Setup Utilities
	floppy drive.

Device Boot Disabling	Prevents booting from and or all of these	Setup Utilities
	devices: Internal or external USB, Internal
	ODD, or Internal FDD

Security Option	Prevents use of computer until password is	Setup Utilities
	entered. Can apply to both initial startup and
	restart.

BIOS Write Protect	Restricts ability to change ROM BIOS with-	Setup Utilities
	out approval.

USB Controller	Allows you to disable or enable all USB	Setup Utilities
	devices.

Common POST Error Messages

Screen Message	Probable Cause	Recommended Action

101-Option ROM Check-	1. System ROM checksum	1.	Verify ROM, reflash if required
sum Error	error.	2.	Remove suspected card, reboot
		2.	Remove suspected card, reboot
	2. Expansion board option	3.	Clear CMOS memory, reboot
	ROM checksum	3.	Clear CMOS memory, reboot
	ROM checksum	4.	Replace system board
	3. System board	4.	Replace system board
	3. System board

103-System Board	DMA, timers	1.	Clear CMOS memory.
Failure		2.	Remove expansion boards.
		2.	Remove expansion boards.
		3.	Replace system board.

164-Memory Size Error	Incorrect memory configu-	1.	Run Setup (F10).
and	ration	2.	Check DIMMs for proper
201-Memory Error		2.	Check DIMMs for proper
201-Memory Error			seating, type, and HP
			seating, type, and HP
			compatibility.
		3.	Remove DIMMs singularly and
			reboot to isolate faulty DIMM.
		4.	Replace system board.

214-DIMM Configura-	Populated DIMM configura-	Rearrange the DIMMs so that
tion Warning	tion is not optimized	each channel has the same amount
		of memory.

301-, 304-Keyboard error	Keyboard failure.	Check keyboard connection or
		keys. Check connector for bent of
		missing pins. Replace keyboard. If
		304, possible system board prob-
		lem.

501-Display Adapter	Graphics display controller.	1.	Reseat graphics card.
Failure		2.	Clear CMOS.
		2.	Clear CMOS.
		3.	Check monitor connection.
		4.	Replace graphics card.

1720-SMART Hard Drive	Hard drive is about to fail.	1. Determine if hard drive is
Detects Imminent Failure			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.

1796-SATA Cabling Error	One or more SATA devices	Ensure SATA connectors are used
	are improperly attached. For	in ascending order. For one
	optimal performance, the	device, use SATA 0. For two
	SATA 0 and SATA 1 con-	devices, use SATA 0 and SATA 1.
	nectors must be used before	For three devices, use SATA 0,
	SATA 2 and SATA 3.	SATA1, and SATA 2.

1801-Microcode Patch	Processor not supported by	1.	Upgrade BIOS to proper
Error	ROM BIOS.		version.
		2.	Change the processor.

Diagnostic Functions

Diagnostic functions are provided by the Setup Utility (in system ROM) and by Insight Diag- nostics. Insight Diagnostics provides detailed system information including:

•Processor type and speed

•Memory amount, mapping, and integrity

•Hardware peripheral availability/settings

•Hard drive type, space used/available

•System identification, asset tracking

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 pro- cedure:

1.Go to www.hp.com

2.Click the Software and Download driver link.

3.Enter the product number (for example, dx7400) in the text box and press the Enter key.

4.Select the specific product.

5.Select the OS.

6.Click the Diagnostics link.

7.Select HP Insight Diagnostics Offline Edition.

8.Select the proper language and click Download.

Diagnostic LEDs

LED	Color	LED Activity	State/Message

Power	Green	On	Computer on

Power	Green	1 blink every second	Processor thermal protection activated,
			fan blocked or not turning, OR
			Fansink not properly attached

Power	Green	2 blinks every second	Suspend to RAM (some Models)

Power	Green	5 blinks, 1 blink every second	Pre-video memory error
		followed by 1 short beep

Power	Green	6 blinks, 1 blink every second	Pre-video graphics error
		followed by a 1 long and 2
		short beeps

Power	Green	8 blinks, 1 blink every second	Invalid ROM with diskette drive
		followed by 2 short beeps

Power	Green	8 blinks, 1 blink every second	Invalid ROM without diskette drive
		followed by 2 short beeps and
		hurried beeps

None	None	System does not power on and	System unable to power on
		LEDs are not flashing

dx7400 Illustrated Parts & Service Map, SFF Chassis

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dx7400 specifications

The HP dx7400 is a desktop computer designed primarily for business environments, providing a balance of performance, reliability, and scalability. Launched in the late 2000s, the dx7400 is tailored to meet the demanding needs of office tasks and professional applications while also being an economical option for enterprises.

One of the standout features of the HP dx7400 is its customizable performance. It is equipped with a range of Intel processors, typically offering options from the Intel Core 2 Duo to more potent options depending on configuration. This flexibility allows businesses to select a processor that best fits their workload requirements, whether for basic office tasks, demanding data processing, or multitasking between applications.

The HP dx7400 also emphasizes expandability. The system is designed with ample expansion slots that allow for additional memory, storage drives, and graphics cards. This expandability ensures that businesses can upgrade the machine as their needs grow without requiring a complete system overhaul. The desktop can support up to 8GB of DDR2 RAM, which is beneficial for running multiple applications simultaneously or handling memory-intensive tasks.

In terms of storage, the dx7400 provides various hard drive options, ranging from traditional HDDs to SATA drives, ensuring users have enough space for files, applications, and backups. The availability of different configurations means that organizations can select drives that offer a balance between speed and storage capacity.

The HP dx7400 is built with connectivity in mind. It provides multiple USB ports, including USB 2.0 and options for legacy connections like serial and parallel ports, catering to a broad array of peripherals and devices. The inclusion of audio and video outputs also makes it a suitable choice for presentations and multimedia projects.

Security is another crucial aspect of the HP dx7400. It often features tools like HP ProtectTools Security Suite, which helps safeguard sensitive data and provides secure access to systems. In addition to hardware security features, the dx7400 integrates various software solutions aimed at data protection.

Lastly, the compact design of the HP dx7400 enables it to fit well in a variety of office spaces. Its straightforward design ensures it can be easily integrated into an existing workplace setup without taking up too much space.

Overall, the HP dx7400 stands out as a versatile, reliable desktop solution that was engineered to cater to the needs of modern business operations, providing essential features for productivity and expandability for future growth.