Lenovo ThinkPad X240s Maintenance Manual page 37

• For Windows 8.1: Move your pointer to the top-right or bottom-right corner of the screen to display
the charms. Click Settings ➙ Change PC settings ➙ Update and recovery ➙ Recovery.
2. In the Remove everything and reinstall Windows section, click Get started. Then click Next to
confirm the operation.
3. Depending on your needs, do one of the following:
• To perform a quick format, click Just remove my files to start the process. The process will take
several minutes.
• To perform a complete format, click Fully clean the drive to start the process. The process will
take several hours.
4. Follow the instructions on the screen to reset your computer to the factory default settings.
Using the advanced startup options
With the advanced startup options, you can change the firmware settings of the computer, change the
startup settings of the Windows operating system, start the computer from an external device, or restore the
Windows operating system from a system image.
To use the advanced startup options, do the following:
1. Depending on the operating system, do one of the following:
• For the Windows 8: Move your cursor to the top-right or bottom-right corner of the screen to display
the charms. Click Settings ➙ Change PC settings ➙ General.
• For the Windows 8.1: Move your pointer to the top-right or bottom-right corner of the screen to
display the charms. Click Settings ➙ Change PC settings ➙ Update and recovery ➙ Recovery.
2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options.
3. Select a desired startup option, then follow the instructions on the screen.
Using the Windows recovery environment
The Windows recovery environment on your computer is capable of operating independently from the
Windows 8 or Windows 8.1 operating system. This enables you to recover or repair the operating system
even if the Windows 8 or Windows 8.1 operating system fails to start.
After two consecutive failed boot attempts, the Windows recovery environment starts automatically. Then
you can choose repair and recovery options by following the instructions on the screen.
Note: Ensure that your computer is connected to ac power during the recovery process.
Creating and using recovery media
You can create recovery media as backups for the Windows recovery environment and the Windows
recovery image. If you cannot start the computer, you can use recovery media to troubleshoot and fix the
problems on your computer.
It is recommended that you create recovery media as early as possible. Once you create recovery media,
keep them in a safe place and do not use them to store other data.
Creating recovery media
To create recovery media, you need a USB drive with at least 16 GB of storage. The required USB capacity
depends on the size of the recovery image.
Attention: Creating recovery media will delete anything stored on the USB drive. To avoid data loss, make a
backup copy of all the data that you want to keep.
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Chapter 4 Related service information
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