Lenovo IdeaPad U455 Lenovo IdeaPad U455 User Guide V1.0 - Page 65
Troubleshooting, OneKey Rescue system problems, Other problems, Boot Device Priority
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Chapter 5. Troubleshooting OneKey Rescue system problems Backup cannot be made. • You are not currently using a Windows operating system. • There is not enough space to store the backed up data. You will need to free more hard disk space on your system partition (C drive). Fail to restore system partition to factory default. • The system partition, such as the partition size or the drive capacity of C, has been modified. Other problems The computer does not respond. • To turn off your computer, press and hold the power button for 4 seconds or more. If the computer still does not respond, remove the AC adapter and the battery. • Your computer might lock when it enters sleep mode during a communication operation. The computer does not start from the desired device. • See the Boot menu of BIOS setup utility. Make sure that Boot Device Priority in 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 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. 51