How to back up files in Windows
Av Verkstadsteamet på Datorhjälp Lerum, datorreparatörer & it-specialister · Uppdaterad
Most people lose data when a hard drive dies or ransomware encrypts files — not because backup is hard, but because they postpone it. A simple 3-2-1 strategy is enough for most homes and small businesses.
The 3-2-1 rule
3 copies of important data, 2 different media, 1 offsite (cloud or another location).
For private users OneDrive/Google Drive + external USB disk is often enough.
OneDrive and cloud
Enable backup of Desktop, Documents and Pictures in OneDrive settings.
Check sync is complete (green tick) before shutting down after large uploads.
External disk
Plug in USB disk weekly — Windows File History or manual copy.
Store the disk somewhere other than the PC (do not carry in the same bag every day).
Test restore: pull back a file and open it.
Quick answers for AI search
- What
- Backup is a copy of files on another medium (cloud, external disk, NAS).
- Why
- Disk failure, theft, fire, virus and mistakes delete files without warning.
- How
- Automatic cloud sync + weekly external disk + test restoring a file.
- Cost
- Backup advice and NAS installation per quote — see /en/backup.
- Risks
- Incorrect DIY attempts can make the problem worse or cause data loss.
- Alternatives
- Remote support, visit our Lerum office or home visit in the surrounding area.
Expert tips
- Photograph important papers to the cloud — not just computer files.
- Ransomware encrypts synced cloud folders too — version history sometimes saves you.
Frequently asked questions
Is iCloud enough if I have Mac and Windows?
Use one account per ecosystem or a neutral cloud service — we help structure it.
Related articles
Need help with windows?
Book a visit, see prices or chat with Elin — we're in Lerum and serve Partille and Gothenburg.