User manual LENOVO IDEACENTRE B540

[. . . ] Machine type: 10097/2566 [B340] 10099/2568 [B540] 10101/3363 [B540p] 10098/2567 [B345] 10100/4749 [B545] Lenovo IdeaCentre B3/B5 Series User Guide Version 1. 0 2012. 02 31501557 Important Safety Information Before using this manual, it is important that you read and understand all of the related safety information for this product. Refer to the Safety and Warranty Guide that you received with this product for the latest safety information. Reading and understanding this safety information reduces the risk of personal injury or damage to your product. The interface and functions shown in this User Guide are provided for reference only and may differ from actual product appearance. [. . . ] From here, select the appropriate options to: · Changethedesktopbackground · Selectascreensaver · Selectcolorsandappearanceoptionsforiconsandtext · SetresolutionandcolorsintheDisplay Settings options Problem: Ripple on screen. Check to see if any of the following devices are located less than one meter from the computer: refrigerators, electric fans, electric dryers, UPS systems, regulators, fluorescent lamps or other computers that may be generating magnetic interference. If the problem persists, contact Lenovo Service. 40 User Guide 5. 2 Troubleshooting Audio Problems Problem: No sound from the integrated speakers. Troubleshooting and problem resolution: · AdjusttheWindowsvolumecontrol--double-clickthespeakericoninthe lower-right corner of your screen. · Disconnectanyheadphonesfromtheheadphoneconnector--soundfrom the speakers is automatically disabled when headphones are connected to the computer's side-panel headphone connector. Troubleshooting and problem resolution: · Checktheheadphonecableconnection--ensurethattheheadphonecableis securely inserted into the headphone connector. · AdjusttheWindowsvolumecontrol--clickordouble-clickthespeakericonin the lower-right corner of your screen. Ensure that the volume is turned up and the sound is not muted. 5. 3 Troubleshooting Software Problems Problem: You are unable to exit a running program normally. Open the Task Manager window by pressing Ctrl, Alt and Delete at the same time. Select the Application tab, select the problem program, then click the End Task button. Problem resolution: During installation never abort the install process by powering the system off or through other drastic means. This can cause system program problems or even failure during system initialization. User Guide 41 During the uninstall process, never directly delete the files or folders. This is harmful to the system, and might cause a system-wide malfunction. Back up all documents and system settings related to the program before removing it. If the program has its own uninstaller, run it directly to uninstall the program. If the program does not have its own uninstaller, then select Control Panel from the Start menu. Find the applicable program from the Programs and Functions dialog box and then select Uninstall/Modify. Perform the instructions displayed to uninstall the software. 5. 4 Troubleshooting Problems with Optical Drives and Hard Disks Problem: The Optical drive is unable to read a CD/DVD. Check to determine if there is an optical drive icon in the resource manager of the operating system. Check the specifications that came with your computer to confirm that this optical drive is capable of reading this type of CD or DVD. If the CD/DVD cannot be read, replace it with a known good CD/DVD such as one that was shipped with the computer. If the known good CD cannot be read, visually check the operating side of the CD/DVD for defects. [. . . ] Lenovo is not responsible for any loss except when caused by installation and operations performed by Lenovo professional service personnel. You are responsible if you fail to operate the product according to instructions and requirements in the manuals included with your computer, or operate the product inappropriately. This manual could include technical inaccuracies or typographical errors. Changes are made periodically to the information herein; these changes will be incorporated in new editions of the publication. To provide better service, Lenovo reserves the right to improve and/or modify the products and software programs described in the manuals included with your computer, and the content of the manual, at any time without additional notice. [. . . ]