- Shift delete user accounts directories ( doc, pic, video, download, desktop )
- Remove programs and features, remove uninstalled directories from program files
- Delete all other partition contents
- Revo uninstaller for agressive program uninstall
- CCleaner – disk cleanup
- Remove browsers temp files: history, cache, cookies, passwds…
- Registry cleaning
- Turn of system files
- Set virtual memory to zero and delete paging files
- Turn off hibernation and remove hibernation file
- Turn off system restore
- SDelete to securely erase the unused space on your hard disk
Check
- Nirsoft password recovery tools
- Nirsoft utils/product cd key viewer
DBAN completely erase hdd