User manual LENOVO IDEAPAD U455

[. . . ] Lenovo IdeaPad U455 User Guide V1. 0 Notes · Before using this information and the product it supports, be sure to read Important safety information on page iii and Notices in Appendix E 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, and thus shouldn't affect your use of this computer. [. . . ] After aligning the attachment clips with their matching gaps, reinstall the compartment cover. 61 Chapter 6. Upgrading and replacing devices 9 Tighten the screws. A Turn the computer over, and reconnect the AC adapter and the cables to the computer. To make sure that the SDRAM is installed correctly, do as follows: 1 2 Turn the computer on. The System Memory item shows the total amount of memory installed in your computer. 62 Chapter 6. Upgrading and replacing devices The following table provides a list of CRUs (Customer Replaceable Units) for your computer, and informs you of where to find replacement instructions. Setup Poster AC adapter Power cord for AC adapter Battery Bottom access doors Hard disk drive Memory O O O O O O O User Guide 63 Appendix A. Getting help and service If you need help, service, technical assistance, or just want more information about Lenovo computers, you will find a wide variety of sources available from Lenovo to assist you. This section contains information about where to go for additional information about Lenovo computers, what to do if you experience a problem with your computer, and whom to call for service should it be necessary. Microsoft Service Packs are the latest software source for Windows product updates. They are available by means of a Web download (connection charges may apply) or from a disc. For more specific information and links, go to the Microsoft Web site at http://www. microsoft. com. Lenovo offers Up and Running technical assistance with installation of, or questions related to, Service Packs for your Lenovo-preinstalled Microsoft Windows product. 64 Appendix A. Getting help and service Getting help on the Web ----------------------------------------------------------The Lenovo Web site on the World Wide Web has up-to-date information about Lenovo computers and support. The address for the Lenovo home page is http://consumersupport. lenovo. com. You can find support information for your Lenovo IdeaPadTM computer at http://consumersupport. lenovo. com. Research this Web site to learn how to solve problems, find new ways to use your computer, and learn about options that can make working with your Lenovo computer even easier. Calling the customer support center -----------------------------------If you have tried to correct the problem yourself and still need help, during the warranty period, you can get help and information by telephone through the customer support center. The following services are available during the warranty period: · Problem determination - Trained personnel are available to assist you with determining if you have a hardware problem and deciding what action is necessary to fix the problem. · Lenovo hardware repair - If the problem is determined to be caused by Lenovo hardware under warranty, trained service personnel are available to provide the applicable level of service. 65 Appendix A. Getting help and service · Engineering change management - Occasionally, there might be changes that are required after a product has been sold. Lenovo or your reseller, if authorized by Lenovo, will make selected Engineering Changes (ECs) available that apply to your hardware. The following items are not covered: · Replacement or use of parts not manufactured for or by Lenovo or non warranted parts · Identification of software problem sources · Configuration of BIOS as part of an installation or upgrade · Changes, modifications, or upgrades to device drivers · Installation and maintenance of network operating systems (NOS) · Installation and maintenance of application programs To determine if your Lenovo hardware product is under warranty and when the warranty expires, go to http://consumersupport. lenovo. com. Refer to your Lenovo hardware warranty for a full explanation of Lenovo warranty terms. Be sure to retain your proof of purchase to obtain warranty service. 66 Appendix A. [. . . ] 47 Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Sleep mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]