Selecting a startup device

Onboard Audio Controller	Select whether to enable or disable the Onboard Audio
	Controller, when feature is set to Disabled all devices
	connected to the audio connectors (e.g. a headphone or
	a microphone) are disabled and can’t be used.

Onboard Ethernet Controller or LAN Boot Agent	Select whether to enable or disable Onboard Ethernet
	Controller, or select whether to enable or disable load
	onboard PXE (Preboot Execution Environment), or
	SMC (Secure Managed Client). This feature will allow
	the computer to boot from a server image.

To enable or disable a device, do the following:

1.Start the Setup Utility program (see “Starting the Setup Utility program” on page 13).

2.From the Setup Utility program menu, select Devices.

3.Select:

Serial Port Setup press the Enter key, and then select Serial Port Setup.

USB Setup press the Enter key, and then select USB Functions.

ATA Device Setup press the Enter key. Select Configure SATA as, press the Enter key and then select SATA mode.

Video Setup press the Enter key, and then select Video Setup.

Audio Setup press the Enter key, and then select Onboard Audio Controller.

Network Setup press the Enter key, then select Onboard Ethernet Support or LAN Boot Agent.

4.Select Disabled or Enabled and press the Enter key.

5.Return to the Lenovo BIOS Setup Utility program menu and select the Exit option.

6.Select Save changes and Exit from the menu.

Note: If you do not want to save the settings, select Discard changes and Exit from the menu.

If your computer does not boot from a device such as the CD/DVD-ROM drive disk or hard disk as expected, follow one of the procedures below.

Selecting a temporary startup device

Use this procedure to startup from any boot device.

Note: Not all CDs, DVDs or hard disk drives are bootable.

1.Turn off your computer.

2.Press and hold the F12 key then turn on the computer. When the Startup Device Menu appears, release the F12 key.

Note: If the Startup Device Menu does not display using these steps, repeatedly press and release the F12 key rather than keeping it pressed when turning on the computer.

3.Use ↑ and ↓ arrows to select the desired startup device from the Startup Device Menu and press the Enter key to begin.

Note: Selecting a startup device from the Startup Device Menu does not permanently change the startup sequence.

Selecting or changing the startup device sequence

16Lenovo H520sHardware Maintenance Manual

H520S specifications

The Lenovo H520S is a compact desktop PC designed to cater to both home and office environments. It combines sleek design with robust performance, making it an excellent choice for users seeking versatility in a desktop system. One of the standout features of the H520S is its powerful computing capabilities, driven by Intel's third-generation Core processor family. This ensures that tasks ranging from everyday browsing to demanding applications run smoothly and efficiently.

The design of the Lenovo H520S is notably space-saving, allowing it to fit comfortably in various environments without taking up excessive desk space. With a brushed metal finish and minimalist aesthetic, it blends seamlessly with modern office setups and home entertainment centers alike. The compact chassis not only contributes to its stylish appearance but also enhances portability, making it easier to transport if needed.

In terms of performance, the H520S is equipped with up to 16GB of DDR3 RAM, which provides ample memory for multitasking and running multiple applications simultaneously. The inclusion of integrated graphics and support for discrete graphics options allows users to engage in casual gaming and enjoy multimedia content without lag. For storage, the system offers a range of hard drive options, including traditional HDDs and faster SSDs, catering to different performance and capacity needs.

The desktop is also designed with connectivity in mind. It features multiple USB ports, HDMI output, and audio jacks, ensuring compatibility with a wide range of peripherals and devices. Additionally, the Lenovo H520S includes built-in Wi-Fi and Ethernet options for seamless internet connectivity, enabling users to stay connected whether working from home or in a busy office.

User convenience extends to its energy efficiency, with the H520S being Energy Star certified. This not only contributes to lower energy bills but also reflects Lenovo's commitment to sustainability. Overall, the Lenovo H520S stands out with its combination of compact design, powerful performance, and thoughtful features, making it an ideal choice for anyone looking for a reliable desktop solution that meets both personal and professional needs.

Lenovo H520S manual Selecting a startup device, Selecting a temporary startup device

Models: H520S

Onboard Audio Controller

Onboard Ethernet Controller or LAN Boot Agent

6.Select Save changes and Exit from the menu.