Introduction
This manual provides essential information for setting up, operating, maintaining, and troubleshooting your HP EliteDesk 800 G4 Mini PC Desktop Computer. Please read this manual thoroughly before using your device to ensure optimal performance and longevity.
What's in the Box
- HP EliteDesk 800 G4 Mini PC
- Wireless Keyboard
- Wireless Mouse
- Power Adapter and Cable
- Documentation (this manual)
Setup Guide
1. Unpacking and Placement
Carefully remove all components from the packaging. Place the HP EliteDesk 800 G4 Mini PC on a stable, flat surface with adequate ventilation. Ensure no vents are obstructed.

Image: The HP EliteDesk 800 G4 Mini PC shown alongside its included wireless keyboard and mouse, illustrating its compact size and accessories.
2. Connecting Peripherals
- Connect Monitor(s): Use the DisplayPort or VGA ports on the rear of the Mini PC to connect your monitor(s). The device supports multiple displays.
- Connect Wireless Keyboard and Mouse: Insert the 2.4GHz USB receiver (usually found in the mouse or keyboard battery compartment) into an available USB port on the Mini PC. Ensure batteries are installed in the keyboard and mouse.
- Connect Power: Plug the power adapter into the Mini PC's power input and then into a wall outlet.
- Optional Connections: Connect any other USB devices (e.g., external hard drives, printers) to the available USB ports. Connect an Ethernet cable to the RJ-45 port for wired network access, if desired.

Image: A close-up of the front panel of the HP EliteDesk 800 G4 Mini PC, highlighting the USB-C, USB 3.0 ports, and audio jacks for easy access.

Image: The rear panel of the HP EliteDesk 800 G4 Mini PC, displaying its array of connectivity options including DisplayPort, VGA, multiple USB ports, and an Ethernet port.
3. Initial Power On
Press the power button on the front of the Mini PC. The system will boot into Windows 11 Pro. Follow the on-screen instructions to complete the initial setup, including network configuration and user account creation.
Operating Instructions
Basic Operation
- Power On/Off: Press the power button to turn the PC on. To turn off, click the Start button, then Power, and select Shut down.
- Restart: To restart the system, click the Start button, then Power, and select Restart.
- Sleep Mode: To put the PC into sleep mode, click the Start button, then Power, and select Sleep.
- Using the Wireless Keyboard and Mouse: The included wireless peripherals connect automatically via the USB receiver. Ensure they have fresh batteries for optimal performance.

Image: The wireless keyboard and mouse, emphasizing their sleek design and wireless connectivity for a clutter-free workspace.
Maintenance
- Keep Vents Clear: Ensure the air vents on the Mini PC are not blocked to prevent overheating.
- Regular Cleaning: Use a soft, dry cloth to clean the exterior of the PC. For dust in vents, use compressed air.
- Software Updates: Regularly update Windows 11 Pro and device drivers to maintain security and performance.
- Data Backup: Periodically back up important data to an external drive or cloud storage.
Troubleshooting
Common Issues and Solutions
| Issue | Possible Solution |
|---|---|
| PC does not power on | Check power cable connections to the PC and wall outlet. Ensure the power adapter is functioning. |
| No display on monitor | Verify monitor power and cable connections. Ensure the correct input source is selected on the monitor. Try a different display port or cable. |
| Wireless keyboard/mouse not responding | Check batteries in the keyboard and mouse. Ensure the USB receiver is securely plugged into a USB port. Try a different USB port. |
| Slow performance | Close unnecessary applications. Check for background updates. Ensure adequate ventilation to prevent thermal throttling. Run a disk cleanup. |
Specifications
| Feature | Detail |
|---|---|
| Brand | HP |
| Model Name | EliteDesk 800 G4 Mini |
| Processor | Intel Core i5-8500T (6-cores, 2.10GHz) |
| RAM | 16GB DDR4 SDRAM |
| Storage | 256GB SSD (Solid State Drive) |
| Operating System | Windows 11 Pro |
| Graphics Coprocessor | Integrated GPU |
| Max Screen Resolution | 1920x1080 |
| Connectivity | USB-C, USB 3.0, DisplayPort, VGA, Ethernet |
| Weight | 6.49 pounds |
| Color | Black |
Warranty and Support
This HP EliteDesk 800 G4 Mini PC is a renewed product. Please refer to the specific warranty information provided by the seller at the time of purchase for details regarding coverage and duration. For technical support, please contact the seller or HP customer service.
Additional protection plans may be available for purchase. Check product listing for more details.