If your Windows 7 PC has an (common in later models), do not use DBAN . Overwriting wears out SSD cells and may not work due to wear-leveling technology. Instead:
If your computer came with a manufacturer recovery partition (common for laptops like Dell, HP, or Lenovo), you can often return it to "factory condition" from within Windows. : Go to Control Panel > System and Security . Click Backup and Restore . Select Recover system settings or your computer . Click Advanced recovery methods . Select Return your computer to factory condition . how to delete hard drive windows 7