User manual LENOVO IDEACENTRE C355

[. . . ] Machine type: 10102/4773 [C340] 10103/4751 [C345] 10104/6595 [C440] 10105/6596 [C445] 10110/6267 [C540] Lenovo C3/C4/C5 Series User Guide Version 2. 0 2012. 08 31502285 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 product damage. The interface and functions shown in this User Guide are provided for reference only and may differ from actual product appearance. [. . . ] When you want to watch analog TV again, you must create and save a new channel list. • You must set the TV tuner input signal to analog before you can watch Teletext programming. Windows Help and Support If you have a problem with the operating system, see the Windows Help and Support file. To open the Windows Help and Support file, do one of the following: • Select the Settings charm, then select Help. You can read the Windows Help and Support file on your computer. You can also get online help and support by clicking on one of the two links listed under More to explore. 24 User Guide 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. 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. 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. 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. User Guide 25 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. The following are general methods for cleaning the components: • You can use a soft cloth to remove dust on the surface of the computer, the monitor, the printer, the speakers and the mouse. • You can use a vacuum cleaner to clean in otherwise inaccessible corners. [. . . ] For the latest information or any questions or comments, contact or visit the Lenovo Web site: Service Web site: http://support. lenovo. com User Guide 41 Trademarks Lenovo and the Lenovo logo, IdeaCentre and IdeaCentre logo are trademarks of Lenovo in the United States, other countries, or both. Microsoft, Windows, and Windows Vista are trademarks of the Microsoft group of companies. Intel Inside is a trademark of Intel Corporation in the U. S. AMD, the AMD Arrow logo, ATI, AMD Athlon, AMD LIVE!, AMD Opteron, AMD Phenom, AMD Sempron, Catalyst, Cool ‘n’ Quiet, CrossFire, PowerPlay, Radeon, and The Ultimate Visual Experience are trademarks of Advanced Micro Devices, Inc. [. . . ]