User manual LENOVO IDEAPAD U260

[. . . ] New Thinking. TM www. lenovo. com P/N: 147003730 Printed in China 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. [. . . ] - 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. - Speakers are selected as the playback device. 21 U260 User Guide V1. 0_en. book Page 22 Monday, October 4, 2010 12:11 PM 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. · Discharge and recharge the battery. · The surge protector in the battery might be active. Turn off the computer for one minute to reset the protector; then turn on the computer again. 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 Device Priority 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 18. OneKey Rescue system problems Backup cannot be made. · · · You are not currently using a Windows operating system. You will need to free more hard disk space on your system partition (C drive). The system partition, such as the partition size or the drive capacity of C, has been modified. Fail to restore system partition to factory default. 22 U260 User Guide V1. 0_en. book Page 23 Monday, October 4, 2010 12:11 PM Chapter 5. · To turn off your computer, press and hold the power button for 4 seconds or more. Your computer might lock when it enters sleep mode during a communication operation. Make sure that the Boot Device Priority in the BIOS setup utility is set so that the computer starts from the device you want. Also make sure that the device from which the computer starts is enabled. In the Boot menu in the BIOS setup utility, make sure that the device is included in the Boot Device Priority list. Press F12 when the Lenovo logo appears on the screen while the computer is starting up to select the device you want the computer starts from. Do not connect or disconnect any external device cables other than USB while the computer power is on; otherwise, you might damage your computer. When using a high power consumption external devices such as an external USB optical disk drive, use external device power adapter. [. . . ] 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. The limits for Class B equipment were derived for typical residential environments to provide reasonable protection against interference with licensed communication devices. Properly shielded and grounded cables and connectors must be used in order to reduce the potential for causing interference to radio and TV communications and to other electrical or electronic equipment. [. . . ]