Summary
18 items · 30 minutes to 2 hours depending on your computer and backup needs
Why This Checklist Matters
Selling or donating an old computer feels straightforward — but skipping the right steps can expose your passwords, financial documents, photos, and saved login credentials to whoever receives the machine next. A simple delete or even an empty of the Recycle Bin is not enough: deleted files often remain recoverable with free software until the storage is properly overwritten.
Whether you're passing a laptop to a family member, trading it in, or dropping it at a recycling center, this checklist walks you through every step in the right order. If you're simultaneously setting up a replacement device, see our guide to setting up a new computer for a parallel walkthrough.
Back Up Your Data
Sign Out and Deauthorize Accounts
Prepare the Drive
Perform the Factory Reset
Final Physical Checks
Tools You'll Need to Get Started
Most of what you need is already built into your operating system. A few optional tools can make the process more thorough, particularly for older computers that don't support modern factory reset features.
External Hard Drive or USB Drive
Used to back up your personal files before wiping the computer.
Cloud Storage Account
An alternative or supplement to a physical drive for backing up documents and photos.
Drive Wiping Utility (e.g., DBAN for HDDs)
Performs multi-pass overwrites on traditional hard drives for more thorough data removal than a standard reset.
Your Operating System's Built-in Reset Tool
Windows Recovery or macOS Erase All Content and Settings handles the factory reset without additional software on modern machines.
Don't Skip the Backup Step
A factory reset permanently deletes everything on the computer. Once the wipe begins, there is no built-in undo. Always confirm your backup is complete and files are accessible on another device before you start the reset process.
Standard Deletion Is Not Enough
Dragging files to the Recycle Bin and emptying it does not erase data from a hard drive — it only removes the file's directory entry. Freely available data recovery tools can reconstruct deleted files if the storage has not been properly overwritten or wiped.
Key Risks to Understand Before You Begin
Two mistakes account for the majority of data exposure when people give away computers. First, assuming that logging out of a browser clears saved passwords — it typically does not erase them from the local profile unless you also delete browser data. Second, believing that a factory reset alone is sufficient on older machines with traditional spinning hard drives (HDDs). On an HDD, a standard reset may leave data recoverable; a dedicated drive-wiping tool provides stronger protection. Solid-state drives (SSDs), which store data differently, are generally handled more thoroughly by modern operating system resets, but verifying your specific model's documentation is wise.
If you're still deciding whether to part with your machine at all, our article on upgrading versus replacing a computer can help you think through that decision first.
Older Hard Drives Need Extra Steps
Traditional spinning hard drives (HDDs) are not fully cleared by a standard factory reset on older operating systems. If your computer uses an HDD rather than a solid-state drive (SSD), use a dedicated drive-wiping utility that overwrites the entire disk. SSDs are generally handled more completely by modern OS resets, but review your computer's documentation to be sure.
The content on this site is for informational purposes only and is not a substitute for professional advice. Always consult a qualified professional for guidance specific to your situation.