For Windows users:
As a last resort, you can physically destroy your hard drive to ensure complete data destruction: how to wipe computer hard drive
Before wiping your hard drive:
Deleting files or formatting a drive does not physically remove data; it only marks space as available for overwriting. Standard recovery tools can easily retrieve such data. Secure wiping overwrites every sector of the drive, making original data unrecoverable even with forensic tools. For Windows users: As a last resort, you