Windows 8 may sometimes report that your primary hard drive or system disk is problematic and it must be replaced. But you may not notice anything wrong with your computer, and probably won't feel like reinstalling Windows as well as all your applications just to get rid of the error. But don't fret: Windows 8 can manage disk removal—as opposed to Windows Vista and Windows 7—on its own. Open the Control Panel, go to “Maintenance” and select “Save complete computer”. Windows will now ask you which hard disk must be saved where. You have the option to burn all your data onto DVDs. However, a standard 50GB Windows installation would occupy 12 DVD blanks. However, you can use a second, internal hard disk to back-up your system. Make sure the target disk drive is a basic data carrier. Dynamic disk drives are rejected by Windows and must be converted in the Disk Management section to basic. Before the backup process, make sure that the disk has enough free space and that it is formatted in the NTFS file system. The backup process doesn't take long: our 60GB Windows 8 installation was copied onto an external disk in less than half an hour via USB 2.0. The PC must be shut down before you replace the defective drive. Afterwards, restart the computer and insert the Windows 8 installation DVD. After booting, the Windows 8 installation routine will begin. Now select “Repair options” instead of “Installation”. Click “Next” and the wizard will lead you through the steps to successfully repair your computer.