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. Make sure that: - The battery is charged. - The operating temperature is within the acceptable range. 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. Make sure that: - The display device driver is installed correctly. - The screen resolution and color quality are correctly set. 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. · Make sure that: - The Mute function is off. - Speakers are selected as the playback device. 37 Chapter 5. Troubleshooting Battery problems Your computer shuts down before the battery status indicator shows empty. -orYour computer operates after the battery status indicator shows empty. The operating time for a fully charged battery is short. [. . . ] Specifications Model Name: V470/V570/B470/B570/B570e Machine Type 20086, 4396 / 20092, 1066 / 20087, 4315 / 20093, 1068 / 20129 Note: The following specifications may contain technical inaccuracies or typographical errors. Lenovo reserves the right to improve and/or change specifications at any time without notice. V470/B470 Form Factor Size Appr. 340 mm × 234. 6 mm × 20. 7~31. 3 mm (V470) Appr. 340 mm × 234. 6 mm × 23. 4~33. 6 mm (B470) Appr. [. . . ]