User manual LENOVO G575

[. . . ] Lenovo G470/G475/ G570/G575 User Guide V1. 0 Read the safety notices and important tips in the included manuals before using your computer. Notes · Before using the product, be sure to read Lenovo Safety and General Information Guide first. · Some instructions in this guide may assume that you are using Windows® 7. If you are using other Windows operating system, some operations may be slightly different. If you are using other operating systems, some operations may not apply to you. [. . . ] · You need to pair the Bluetooth enabled device with your computer before you can transfer data between them. Read the documentation supplied with the Bluetooth enabled device for details on how to pair the device with your computer. to . 19 Chapter 2. Learning the basics Special keys and buttons ------------------------------------------------------------------- 1 OneKey Rescue system button a · When the computer is powered-off, press this button to enter the OneKey Rescue system if Lenovo OneKey Rescue system has been preinstalled. · In Windows operating system, press this button to start Lenovo OneKey Recovery. Note: For details, see "OneKey Rescue system" on page 29. 20 Chapter 2. Learning the basics System status indicators -------------------------------------------------------------------These indicators inform you of the computer status. 1 2 3 4 5 6 a Caps lock indicator b Num lock indicator c Power status indicator d Battery status indicator e Wireless communication indicator f Hard disk drive indicator 21 Chapter 2. Learning the basics Securing your computer --------------------------------------------------------------------This section provides information about how to help protect your computer from theft and unauthorized use. Attaching a security lock (not supplied) You can attach a security lock to your computer to help prevent it from being removed without your permission. For details on installing the security lock, please refer to the instructions shipped with the security lock that you have purchased. Refer to the "Left-side view" on page 4 for the location of the Kensington slot. Notes: · Before purchasing any security product, verify that it is compatible with this type of security keyhole. · You are responsible for evaluating, selecting, and implementing the locking devices and security features. Lenovo offers no comment judgement or warranty regarding the function, quality or performance of locking devices and security features. Using VeriFaceTM VeriFace is a face recognition software which takes a digital snapshot, extracts key features of your face, and creates a digital map that becomes the system's "password". If you want to activate VeriFace for the first time, click the VeriFace icon on the desktop to register your facial image. Notes: · The face registration and verification works best in an environment with steady and even light. · You can determine whether to use this function when you log on the system. For more details on VeriFace, see the software help. 22 Chapter 2. Learning the basics Using passwords Using passwords helps prevent your computer from being used by others. Once you set a password and enable it, a prompt appears on the screen each time you power on the computer. The computer cannot be used unless you enter the correct password. Note: This password can be from one to seven alphanumeric characters in any combination. For details about how to set the password, see the Help to the right of the screen in BIOS setup utility. Note: To enter BIOS setup utility, press F2 when the Lenovo logo appears on the screen while the computer is starting up. 23 Chapter 2. Learning the basics Using Switchable Graphics (specific models only) -------------Some IdeaPad models support Switchable Graphics. * GPU is short for graphics processing unit. Note: The dedicated GPU provides you with superior graphics performance while the energy-efficient integrated graphics provides longer operation with the battery. You can to switch to the high-performance GPU to gain the best graphics performance. However, when the computer is using battery power you are advised to switch to the power-saving GPU if you are not running graphics-intensive applications. To change the GPU, do the following: 1 Start your computer to the Windows 7 operating system. Note: Under Windows XP or Windows Vista, none of the configurations support the Switchable Graphics, and they only work in the integrated GPU mode. 2 If the computer is in sleep or hibernation mode, press the power button to wake it up. 3 Activate the Switchable Graphics dialog box. To activate the dialog box, you can right-click on the desktop and select Configure ATI PowerXpress (TM) from the pop-up menu. 4 On the Switchable Graphics dialog box, you can see the currentlyactivated GPU under Current active Graphics Processing Unit. [. . . ] DDR3 SDRAMs are available in various capacities. Note: Use only the memory types supported by your computer. If you incorrectly install optional memory, or install an unsupported memory type, a warning beep will sound when you try to start the computer. To install a DDR3 SDRAM, do the following: 1 Touch a metal table or a grounded metal object to reduce any static electricity in your body, which could damage the DDR3 SDRAM. Do not touch the contact edge of the DDR3 SDRAM. Disconnect the AC adapter and all cables from the computer. [. . . ]