If you are experiencing issues or major malware infections with your ultrabook, then a complete factory restore may be the way to go. This tutorial is Mainly for 14Z-5423, but it should work on other Ultrabooks too.
If you have Windows 8, you may follow the steps below:
• Press ‘Windows’ key + ‘C’ to pull up the ‘Charms Bar’. • Click ‘Settings’ and then click ‘Change PC settings’. • Under PC settings, click ‘General’. • Under ‘Advanced Startup’, click ‘Restart now’. • On the Choose an option screen, click ‘Troubleshoot’. • Click the ‘Dell Backup and Recovery’ icon • The system restarts and comes back up, click ‘Next’ on the Dell Backup and Recovery Screen • The system would be checked to see if the smart repair option can fix the issue, click ‘Next’ once this is done • You will be prompted to select the backup to be used, click the factory image option or select from one of the backups. Click ‘Next’ • You will be prompted to back up your files, select ’No, Erase my files’ • The system goes ahead and completes the restore of the operating system. Click Restart when prompted • Follow the on-screen instructions to setup the system with windows