User manual LENOVO IDEACENTRE A720

[. . . ] Machine type: 10096/2564 Lenovo IdeaCentre A7 Series User Guide Version 1. 0 2012. 02 31501458 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. [. . . ] If you don't want to set a password, access the system directly and use it accordingly. 3. 4 System Backup This backs up your system partition to an image file. In case of a system failure, you can restore your system from this image file. In the Windows system, click Start All Programs Lenovo Lenovo Rescue System. After starting Rescue System, click System Backup to back up your system partition by following the prompts. 3. 5 System Recovery Reboot your computer into the system recovery environment. You can choose to restore to a system backup point or the initial state (factory default settings). 3. 6 Create Recovery Disc Create a bootable recovery disc from the current system. These recovery discs are used to boot your computer and will guide you through the entire restoration process. In the Windows system, click Start All Programs Lenovo Lenovo Rescue System. After starting Rescue System, click Create Recovery Disc to create a bootable recovery disc from the current system. Follow the on-screen prompts to create a recovery disc. 26 User Guide Chapter Troubleshooting and Confirming Setup This chapter contains the following topic: Ø Troubleshooting and Problem Resolution Note: The description of the TV tuner card in this manual is only applicable to machines which have the TV tuner card. It does not apply to machines that do not have a TV tuner card. User Guide 27 Solving Problems Follow these tips when troubleshooting your computer: · Ifyouaddedorremovedapartbeforetheproblemstarted, reviewthe installation procedures to ensure that the part is correctly installed. · Ifaperipheraldevicedoesnotwork, ensurethatthedeviceisproperly connected. · Ifanerrormessageappearsonthescreen, writedowntheexactmessage. This message may help support personnel diagnose and fix the problem(s). · Ifanerrormessageoccursinaprogram, seetheprogram'sdocumentation. 4. 1 Troubleshooting Display Problems Problem: Blank screen or no image is displayed on the monitor. Troubleshooting and problem resolution: Check that the LCD screen has been turned on; If not, press the LCD On/Off button to turn on the LCD. If still cannot solve the problem, contact Lenovo Customer Service. Problem: You need to change the display property settings. Setting display background and icon properties: 1. Right-click the desktop anywhere except over an icon, then select Personalize from the pop-up menu. From here, select the appropriate options to: · Changethedesktopbackground · Selectascreensaver · Selectcolorsandappearanceoptionsforiconsandtext · SetresolutionandcolorsintheDisplay Settings options Problem: Ripple on screen. Troubleshooting and problem resolution: 1. 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. Move any interfering devices away from the computer. [. . . ] · YoumustsettheTVtunerinputsignaltoanalogbeforeyoucanwatch Teletext programming. 4. 7 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 fromtheelectricaloutlet. Cleanyourcomputerwithasoftcloth dampened with water. Do not use liquid or aerosol cleaners, which may contain flammable substances. [. . . ]