Turn on the computer and repeatedly press the key to enter the BIOS Setup. Use the arrow keys to navigate to the File menu. Select Flash System ROM or Flash BIOS .
Insert the USB drive into a rear USB port of the dc5800 SFF and restart the machine. Press to enter the Computer Setup utility. Select File , then choose Flash System ROM .
Navigate to -> Apply Defaults and Exit . Resetting the BIOS to factory defaults ensures that old, cached configuration data doesn't conflict with the new firmware microcode.
: Connect the PC to a reliable power source. Do not interrupt power once the update starts. How to Update (Recommended Method)
Once the update is successful and your machine boots back up: Press F10 during startup to enter the BIOS again. hp compaq dc5800 small form factor bios update
The SP159229 BIOS update for the HP Compaq dc5800 SFF transforms a security-vulnerable, unstable legacy machine into a surprisingly robust secondary PC.
Reconfigure any specific custom settings you had before, such as your preferred boot order or SATA controller mode (AHCI vs. IDE). To help me provide more tailored guidance, tell me: What is currently running on the machine?
Create a folder structure on your USB drive named Hewlett-Packard\BIOS\New . Copy the .bin file directly into that New folder.
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Follow the on-screen instructions to proceed with the flash.
If the HP website redirects endlessly, use the direct HP FTP archive (still live as of 2026):
Ensures better power management and stability under Windows 10 or Linux distributions. Pre-Update Checklist: Read Before Proceeding
The dc5800 series uses a specific BIOS softpaq. The final version is typically , often identified by the HP SoftPaq number sp73863 . Navigate to the HP Support Drivers Page. Turn on the computer and repeatedly press the
Are you updating to fix a or error code?
If you encounter an issue not covered here, the HP Community support forums for the dc5800 remain an active resource where users share solutions for this resilient business desktop.
This method is recommended as it operates independently of the operating system, reducing the risk of software-related crashes during the flash. HP Support Community Prepare the USB : Format a USB flash drive to Download and Extract : Download HP Customer Support page. Run the file on a working PC to extract its contents. Copy BIOS Files : Open the extracted folder, navigate to the directory, and copy the image file (e.g., 7G1_0160.bin ) directly to the root of your USB drive. Enter BIOS