Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your HP 21.5-inch FHD All-in-One Desktop PC. Please read this guide thoroughly to ensure proper use and to maximize the performance and longevity of your device.
The HP All-in-One Desktop PC integrates all computer components into a single unit, offering a streamlined and space-saving design. It features a 21.5-inch Full HD display, an Intel Celeron processor, ample memory and storage, and comes pre-installed with Windows 11 Pro and Microsoft Office Home & Business.
1. Setup
1.1 Unboxing and Initial Inspection
Carefully remove all components from the packaging. Verify that all items listed below are present and undamaged:
- HP 21.5-inch All-in-One Desktop PC
- Power Adapter
- Keyboard
- Mouse
- 8-in-1 USB-C/USB-A Docking Station
- SD Card with Adapter
- Documentation (including this manual)

Figure 1: HP 21.5-inch All-in-One Desktop PC with peripherals.

Figure 2: Included accessories: Docking Station, SD Card, and manuals.
1.2 Connecting Peripherals
- Power Connection: Connect the power adapter to the power port on the back of the All-in-One PC, then plug the other end into a wall outlet.
- Keyboard and Mouse: Connect the wired keyboard and mouse to the available USB ports on the back of the PC.
- Docking Station: Connect the 8-in-1 USB-C/USB-A Docking Station to a USB port on the PC. This expands your connectivity options.

Figure 3: Rear ports for connectivity.
1.3 Initial Power-On and Windows Setup
- Press the power button, usually located on the side or bottom edge of the display.
- Follow the on-screen instructions to complete the Windows 11 Pro setup. This includes selecting your region, language, connecting to a Wi-Fi network, and creating a user account.
- Once Windows is set up, activate your included Microsoft Office Home & Business license by following the instructions provided with the product.
2. Operating
2.1 Basic Operation
- Power On/Off: Press the power button to turn the PC on. To turn off, click the Start button in Windows, then Power > Shut down.
- Display Adjustment: The display angle can be adjusted manually for optimal viewing comfort.
- Integrated Camera: The HP True Vision HD privacy camera is integrated into the top bezel. Ensure it is enabled in Windows settings for video calls and other applications.

Figure 4: Using the HP All-in-One PC for video conferencing.
2.2 Connectivity
Your HP All-in-One PC offers various connectivity options:
- Wi-Fi 6: For high-speed wireless internet access. Connect via Windows network settings.
- Bluetooth: For connecting wireless peripherals like headphones or speakers. Pair devices through Windows Bluetooth settings.
- USB Ports: Includes USB-C 3.0 (5Gbps), USB-A 3.0 (5Gbps), and USB 2.0 Type-A ports for connecting external devices.
- HDMI Out: Connect an external monitor or display using an HDMI cable.
- Ethernet (RJ-45): For a wired network connection.
- Headphone/Microphone Combo Jack: For audio input and output.
3. Maintenance
3.1 Cleaning Instructions
- Always power off and unplug the PC before cleaning.
- Use a soft, lint-free cloth slightly dampened with water or a non-abrasive screen cleaner for the display. Avoid harsh chemicals.
- For the chassis, use a soft, dry cloth. Use compressed air to clear dust from vents and ports.
3.2 Software Updates
Regularly check for and install Windows updates to ensure system stability, security, and performance. Go to Settings > Windows Update to manage updates.
3.3 Data Backup
It is recommended to regularly back up your important data to an external drive or cloud storage to prevent data loss.
4. Troubleshooting
This section addresses common issues you might encounter with your HP All-in-One PC.
4.1 Power Issues
- PC does not turn on: Ensure the power cable is securely connected to both the PC and the power outlet. Test the outlet with another device.
- PC turns off unexpectedly: Check for proper ventilation. Ensure vents are not blocked. Excessive heat can cause shutdowns.
4.2 Display Problems
- No image on screen: Verify the PC is powered on. If an external monitor is connected, ensure the correct input source is selected on the monitor.
- Flickering or distorted image: Update graphics drivers through Windows Update or HP Support Assistant.
4.3 Performance Issues
- Slow or unresponsive system: Close unnecessary applications. Check Task Manager for processes consuming high CPU or memory. Ensure Windows and drivers are up to date.
- Applications freezing: Try restarting the application. If the system is unresponsive, perform a forced shutdown by holding the power button for several seconds.
4.4 Connectivity Problems
- Wi-Fi not connecting: Restart your router and the PC. Check Wi-Fi settings in Windows to ensure the correct network is selected and password entered.
- USB devices not recognized: Try connecting the device to a different USB port. Ensure device drivers are installed.
5. Specifications
Detailed technical specifications for the HP 21.5-inch FHD All-in-One Desktop PC:
| Feature | Specification |
|---|---|
| Display Size | 21.5 Inches |
| Screen Resolution | 1920 x 1080 (FHD) |
| Processor | Intel Celeron (up to 2.9 GHz, 2 cores) |
| RAM | DDR4 (32GB for this model) |
| Memory Speed | 3200 MHz |
| Storage | 1.5 TB SSD (1TB SSD + 512GB Docking Station Set) |
| Graphics Coprocessor | Intel UHD Graphics 600 (Integrated) |
| Operating System | Windows 11 Pro |
| Wireless Type | Wi-Fi 6, Bluetooth |
| USB Ports | 1 x USB-C 3.0, 2 x USB-A 3.0, 2 x USB 2.0 Type-A |
| Other Ports | 1 x HDMI Out, 1 x Ethernet (RJ-45), 1 x Headphone/Microphone Combo Jack |
| Integrated Camera | HP True Vision HD privacy camera |
| Item Weight | 15 pounds |
| Package Dimensions | 23 x 15 x 6 inches |

Figure 5: Product dimensions.
6. Warranty and Support
6.1 Product Warranty
For detailed information regarding the product warranty, please refer to the warranty documentation included with your purchase or visit the official HP support website. Warranty terms and conditions may vary based on region and retailer.
6.2 Technical Support
If you encounter issues that cannot be resolved using the troubleshooting steps in this manual, please contact HP Customer Support. You can find support resources, drivers, and contact information on the official HP website:
Please have your product model number (HP All-In-One) and serial number ready when contacting support.