User manual LENOVO B570E

[. . . ] Lenovo V470/ V570/ B470/B570/B570e User Guide V2. 0 Read the safety notices and important tips in the included manuals before using your computer. Notes · Before using the product, be sure to read Lenovo Safety and General Information Guide 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. [. . . ] Connect the AC adapter to the computer, or replace the battery with a fully charged one. Use and care Information" of Lenovo Safety and General Information Guide. · Note: If the battery is charged and the temperature is within range, have the computer serviced. The computer does not return from sleep mode and the computer does not work. · If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. If your computer is in sleep mode, connect the AC adapter to the computer, then press any key or the power button. If your computer is in hibernation mode or power-off state, connect the AC adapter to the computer, then press the power button to resume operation. · · Note: If the system still does not return from sleep mode, your system has stopped responding, and you cannot turn off the computer; reset the computer. To reset the computer, press and hold the power button for 4 seconds or more. If the computer is still not reset, remove the AC adapter and the battery. Computer screen problems The screen is blank. · Do the following: - If you are using the AC adapter, or using the battery, and the battery status indicator is on, press Fn + to make the screen brighter. - If the power indicator is in blinking, press the power button to resume from the sleep mode. - If the problem persist, follow the solution in the following problem "The screen is unreadable or distorted. " - Press Fn + F2 to confirm whether the LCD screen has been turned off. Did you install the operating system or application program correctly?If they are installed and configured correctly, have the computer serviced. The screen is unreadable or distorted. · Incorrect characters appear on the screen. · Sound problems No sound can be heard from the speaker even when the volume is turned up. Troubleshooting Battery problems Your computer shuts down before the battery status indicator shows empty. -orYour computer operates after the battery status indicator shows empty. · Discharge and recharge the battery. · · For details, see "Handling the battery" in Chapter 2. Turn off the computer for one minute to reset the protector; then turn on the computer again. For details, see "Handling the battery" in Chapter 2. · A hard disk drive problem The hard disk drive does not work. · In the Boot menu in BIOS setup utility, make sure that the hard disk drive is included in the Boot Priority Order correctly. A startup problem The Microsoft® Windows operating system does not start. · Use the OneKey Rescue system to help solve or identify your problem. OneKey Rescue system" on page 33. OneKey Rescue system problems Backup cannot be made. · · · You are not currently using a Windows operating system. [. . . ] (1) 4: Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse B. 59 Appendix C. Product specific notices European Union Compliance Statement Class B Compliance European Union - Compliance to the Electromagnetic Compatibility Directive This product is in conformity with the protection requirements of EU Council Directive 2004/108/ EC on the approximation of the laws of the Member States relating to electromagnetic compatibility. Lenovo cannot accept responsibility for any failure to satisfy the protection requirements resulting from a non-recommended modification of the product, including the installation of option cards from other manufacturers. This product has been tested and found to comply with the limits for Class B Information Technology Equipment according to European Standard EN 55022. [. . . ]