Lenovo ThinkPad E475 User Manual

Also see for 20H4: Hardware Maintenance Manual

Microsoft Service Packs are the latest software source for Windows product updates. They are availablethrough Web download (connection charges might apply) or through discs. For more specific informationand links, go to https://www.microsoft.com. Lenovo offers technical assistance with installation of, orquestions related to, Service Packs for your Lenovo-preinstalled Microsoft Windows product. For moreinformation, contact the Customer Support Center.Using diagnostic programsMany computer problems can be solved without outside assistance. If you experience a problem with yourcomputer, the first place to start is the troubleshooting information in your computer documentation. If yoususpect a software problem, see the documentation, including readme files and help information systems,that come with the operating system or program.ThinkPad notebook computers come with a set of diagnostic programs that you can use to help you identifyhardware problems. See “Diagnosing problems” on page 61 for instructions on how to use the diagnosticprograms.The troubleshooting information or the diagnostic programs might tell you that you need additional orupdated device drivers or other software. You can get the latest technical information and download devicedrivers and updates from the Lenovo Support Web site at:http://www.lenovo.com/supportLenovo Support Web siteTechnical support information is available on the Lenovo Support Web site at https://support.lenovo.com.This Web site is updated with the latest support information such as the following:• Drivers and software• Diagnostic solutions• Product and service warranty• Product and parts details• User guides and manuals• Knowledge base and frequently asked questionsCalling LenovoIf you have tried to correct the problem yourself and still need help, during the warranty period, you can gethelp and information by telephone through the Customer Support Center. The following services areavailable during the warranty period:• Problem determination - Trained personnel are available to assist you with determining if you have ahardware 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.• Engineering change management - Occasionally, there might be changes that are required after a producthas been sold. Lenovo or your reseller, if authorized by Lenovo, will make selected Engineering Changes(ECs) that apply to your hardware available.The following items are not covered:• Replacement or use of parts not manufactured for or by Lenovo or nonwarranted parts• Identification of software problem sources• Configuration of UEFI BIOS as part of an installation or upgrade96 E475 User Guide