A new computer is the most common moment when people lose data. Not through failure — through haste. The old machine is sold or moved to the basement, and two weeks later it turns out it held scanned documents or years of email.
Step 1: make a list before you copy anything
Go through the old computer and write down what is genuinely needed. There is usually less of it than expected — and it sits in different places than intuition suggests.
- Documents, desktop and the downloads folder — where important files usually land.
- Photos and videos, including those inside editing software folders.
- Email, if the program downloaded messages and deleted the server copy (POP3).
- Passwords saved in the browser, plus bookmarks.
- Application databases: accounting, warehouse, industry software, projects.
- Licences and keys, usually in emails from years ago.
- Electronic signature, banking certificates and configuration files.
Step 2: move data starting with what matters most
| Method | Best when | Watch out for |
|---|---|---|
| External drive | Large photo and document collections | Copy, but do not delete the source yet |
| Cloud | Current documents, work on two machines | Verify the sync actually finished |
| Local network | Very large volumes, both machines at hand | A cable is faster and safer than Wi‑Fi |
| Old disk in an enclosure | When the old computer no longer starts | Data is usually recoverable despite a broken system |
Step 3: email — where things go missing most often
If you use webmail or IMAP, messages live on the server and appear once you sign in on the new machine. If your mail program used POP3, the messages exist only locally — you must move the whole program profile, not just “the inbox”. That distinction explains most calls of the “all my email disappeared” kind.
Step 4: passwords and access
Export passwords from the browser or move your password manager database. Before handing the old computer on, sign out of every account and clear saved sessions. Check two-factor authentication too: if codes come from an app on the old device, move it before wiping — otherwise regaining access can take days.
Step 5: the first week on the new machine
- Open every program you use and confirm it sees its data.
- Print something — the printer is the classic forgotten item.
- Test scanning, the electronic signature and banking sign-in.
- Set up a backup before you start creating new files.
- Only after two weeks consider wiping the old disk.
When to hand it over
The move is simple as long as everything works. Help is worth it when the old computer will not start, when the disk holds industry application databases, or when a business is moving — a mistake then means downtime, not just a lost afternoon.
To be sure nothing is left behind, see computer repair and setup — configuring a new machine and transferring data is one of the most frequent jobs I do.