27 Useful InformationInstalling software will return the computer to the default condition. When you install the software, the hard disk datawill be erased.Back up important data to other media or an external hard disk before installation.CAUTION Do not delete the Recovery Partition on the hard disk. The disk space in the partition is not available to store data. To check the Recovery Partition, perform the following methods. A Open “Computer”. Right-click [Computer], then click [Manage]. To open “Computer”, proceed as follows on the Start screen. 1. Right-click any empty location on the Start screen. 2. Click [All apps] on the toolbar. 3. Click [Computer] under “Windows System”. Click (Start) and right-click [Computer], then click [Manage]. A standard user needs to enter an administrator password. B Click [Disk Management]. Hard Disk RecoveryYou can reinstall the OS that was pre-installed at the time of purchase (Windows 8 or Windows 7).Preparation Change to the laptop mode. Remove all peripherals. Connect the AC adaptor and do not remove it until installation is complete.1 Perform “Remove everything and reinstall Windows”.A Click [Charm] - - [Change PC settings] - [General].B Click [Get Started] under “Remove everything and reinstall Windows”.Installation starts according to the instructions on the screen. (It will take approximately 20 - 150 minutes.) Do not interrupt installation, for example by turning off the computer or pressing Ctrl + Alt + Del. Otherwise installation may become unavailable as Windows may not start up or the data may be corrupted.2 When termination screen is displayed, click [OK] to turn off the computer.3 Turn on the computer. If the password is requested, enter the Supervisor Password.4 Perform the “First-time Operation” ( page 18).NOTE The date and time, and the time zone may not be correct. Be sure to set them correctly.5 Start the Setup Utility and change the settings as necessary.6 Perform Windows Update.7 Clear TPM.A Right-click any empty location on the Start screen, and click [All apps] on the toolbar.B Click [Run] under “Windows System”, input [tpm.msc] and click [OK].C Click [TPM Clear…] under “Actions” on the right of the “TPM Manager on Local Computer” screen.D Click [Restart] of the “Manage the TPM security hardware” screen.The computer will restart.E When “TPM configuration change was requested to ...” is displayed, press F12.The desktop screen appears.F When “TPM is ready” appears, click [Close].1 Turn on the computer, and press F2 or Del while [Panasonic] boot screen is displayed.The Setup Utility starts up. If the [Panasonic] boot screen is not displayed, turn on the computer while holding down F2 or Del. If the password is requested, enter the Supervisor Password.2 Write down all of the contents of the Setup Utility and press F9.At the confirmation message, select [Yes] and press Enter.Installing Software