Lenovo Essential Drivers and BIOS Setup for Optimal Performance
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BIOS setup utility

What is the BIOS setup utility?

The BIOS setup utility is ROM-based software. It communicates basic computer information and provides options for setting boot devices, security, hardware mode, and other preferences.

How can I start the BIOS setup utility?

To start the BIOS setup utility:

1.Shut down the computer.

2.Repeatedly press and release the F1 key after turning on the computer, then select Startup → Boot Priority.

How can I change the boot mode?

There are two boot modes: UEFI and Legacy. To change the boot mode, start the BIOS setup utility and set boot mode to UEFI or Legacy support on the boot menu.

When do I need to change the boot mode?

The default boot mode for your computer is the UEFI mode. If you need to install a legacy Windows operating system (any operating system before Windows 8) on your computer, you must change the boot mode to Legacy support. The legacy Windows operating system cannot be installed if you don’t change the boot mode.

Performing Daily Maintenance Tasks

Cleaning the computer components

Because many of the computer components consist of sophisticated integrated circuit boards, it is very important to periodically clean the computer to prevent dust buildup. The cleaning supplies you need to clean the components include: a vacuum cleaner, a soft cotton cloth, pure water (preferably purified or distilled water) and cotton swabs.

Attention: Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water. Do not use liquid or aerosol cleaners, which may contain flammable substances.

Note: To avoid damaging the computer or display, do not spray cleaning solution directly onto the display. Only use products specifically designed for cleaning displays, and follow the instructions included with the product.

User Guide 25

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Contents H5s Series Important Safety Information Page Contents Hardware Replacement Guide Using the Computer Hardware Front view of the chassis Rear view of the chassis User Guide Connecting your computer Basic connector instructions Connector Description MicrophoneAudio configuration instructions Connecting the power cord How to play Blu-ray Discs selected models only Wired keyboard selected models onlyConnecting to the Internet Using Windows Charms Bar Switching between the main Windows 8 interfacesSwitching between apps Shutting down the computerClosing an app Opening other system programsWindows Help and Support User Guide Using the Rescue System OneKey Recovery Driver and Application Installation Method 1 Automatic InstallationMethod 2 Manual Installation User Guide Troubleshooting Confirming Setup Solving Problems Troubleshooting Display ProblemsTroubleshooting Audio Problems Troubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows Bios setup utility Performing Daily Maintenance TasksUser Guide Hardware Replacement Guide Safety information for replacing CRUs OverviewAdditional information resources Tools requiredLocating components and connectors LocationsHandling static-sensitive devices Internal components Power supply Identifying parts on the system board Microprocessor and heat sink Memory slots General information Pre-disassembly instructionsReplacing hardware Removing the computer coverUser Guide Removing the front bezel To remove the front bezelReplacing an optical drive To replace an optical driveUser Guide Replacing the hard disk drive To replace the hard disk driveReplacing a memory module To replace a memory module Replacing the keyboard and the mouse Completing the installationTo complete the part installation To replace the keyboardUser Guide Appendix DeclarationTrademarks Energy Star Statement 4746 3230Enabling ErP compliance mode
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57312710, 31502552, 3230, 2561, 57311365 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.

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