E
erichumphreySep 12, 2025
Why can't my HP Pro 3400 diskette drive write to a diskette?
- JjoshualiuSep 12, 2025
If your HP Desktop diskette drive cannot write to a diskette, the diskette may not be formatted. Format the diskette.
To Next PageTo Next PageWhy can't my HP Pro 3400 diskette drive write to a diskette?
If your HP Desktop diskette drive cannot write to a diskette, the diskette may not be formatted. Format the diskette.
What to do if my HP Pro 3400 Desktop won't respond to the USB keyboard or mouse?
If your HP Desktop isn't responding to your USB keyboard or mouse, it might be in standby mode. To resume, press the power button or any key. If that doesn't work, the system may have locked up, so try restarting the computer.
What to do if my HP Pro 3400 Desktop computer powered off automatically and the Power LED flashes Red two times?
If your HP Desktop computer powered off automatically and the Power LED flashes Red two times, it indicates that the processor thermal protection has been activated. This may happen if a fan is blocked or not turning, or if the heat sink is not properly attached to the processor. Ensure that the computer air vents are not blocked and the processor cooling fan is running. Open the hood, press the power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. If the fan is plugged in but not spinning, replace the heat sink/fan assembly.
Why is there no sound on my HP Pro 3400 Desktop?
If there's no sound or the sound volume is too low on your HP Desktop, the system volume may be set low or muted. Check the F10 BIOS settings to ensure the internal system speaker is not muted. Also, verify that external speakers are properly connected, powered on, and their volume control is set correctly. Use the system volume control in the operating system to ensure the speakers aren't muted and to increase the volume.
What to do if my HP Pro 3400 Desktop seems to be locked up?
If your HP Desktop seems to be locked up, it could be that a program in use has stopped responding to commands. Attempt the normal Windows 'Shut Down' procedure. If this fails, press the power button for four or more seconds to turn off the power. To restart the computer, press the power button again.
Why won't my HP Pro 3400 Desktop boot from the hard drive?
If your HP Desktop won't boot from the hard drive, the device may be attached to a SATA port that has been hidden in Computer Setup, the boot order may not be correct, or the hard drive's 'Emulation Type' may be set to 'None.' Run the Computer Setup utility and ensure Device Available is selected for the device's SATA port in Security > Device Security. Run the Computer Setup utility and change boot sequence in Storage > Boot Order. Run the Computer Setup utility and change the 'Emulation Type' to 'Hard Disk' in the device's details under Storage > Device Configuration.
What to do if my HP Pro 3400 Desktop USB flash drive is not found?
If your HP Desktop USB flash drive is not found (identified), the device may be attached to a USB port that has been hidden in Computer Setup. Run the Computer Setup utility and ensure that 'Device available' is selected for 'Front USB Ports' and 'Rear USB Ports' under Security > Device Security.
Why can't I format a diskette on my HP Desktop?
If you cannot format a diskette on your HP Desktop, it could be due to an invalid media report, the disk being write-protected, or legacy diskette writes being disabled in Computer Setup. When formatting a disk in MS-DOS, you may need to specify diskette capacity. Open the locking device on the diskette. Enter Computer Setup and enable Legacy Diskette Write in Storage > Storage Options.
What to do if my HP Desktop drive is not found?
If a drive is not found on your HP Desktop, the cable might be loose, or a removable drive may not be seated properly. Reseat the diskette drive data and power cable. Reseat the drive.
Why won't the cursor move with arrow keys on my HP Pro 3400 Desktop?
If the cursor won't move using the arrow keys on your HP Desktop, the Num Lock key may be on. Press the Num Lock key to turn it off. The Num Lock light should not be on if you want to use the arrow keys.
General| Form Factor | Microtower |
|---|---|
| Processor | Intel Core i3, i5, or i7 |
| Graphics | Intel HD Graphics |
| Optical Drive | DVD-RW |
| Operating System | Windows 7 Professional |
| Chipset | Intel H61 |
| Networking | Gigabit Ethernet |
| Ports | USB 2.0, VGA |
Provides a general overview of the HP Pro 3400/3500 series computer features.
Details the functionalities available within the Computer Setup (F10) Utility.
Explains how to access and navigate the Computer Setup (F10) Utility.
Lists spare parts for the Microtower chassis, including major components.
Explains the risks associated with static electricity and electronic components.
Details precautions to prevent damage from electrostatic discharge (ESD).
Describes essential equipment for personal grounding to prevent ESD.
Provides guidelines for preparing a safe, static-free work area.
Lists recommended materials and equipment for static electricity prevention.
Outlines the steps required before disassembling the SFF chassis.
Procedure for removing and replacing the SFF chassis access panel.
Details on memory modules for SFF, including specifications and installation.
Details on processor removal/installation for SFF systems.
Instructions for removing and replacing the SFF system board.
Lists POST errors with numeric codes, descriptions, and recommended actions.
Procedure for disabling or clearing power-on and setup passwords.
Instructions for clearing CMOS settings and resetting BIOS defaults.
Troubleshooting steps for power supply issues and shutdowns.
Diagnosing and resolving issues related to hard drive errors.
Troubleshooting steps for network connectivity and driver issues.
Diagnosing and resolving issues related to memory modules and configuration.
Explains the benefits and purpose of using HP PC Hardware Diagnostics.
Guides on accessing and running the HP PC Hardware Diagnostics tool.
Explains tools and methods for recovering the system after failure.
