How to clean up Windows and free up disk space in under 30 minutes

Did you know most Windows PCs waste up to 30 % of their drive on junk? We see this a lot – a machine that feels sluggish, a fan screaming, and Task Manager showing 100 % disk usage. The good news is you can reclaim that space in under half an hour without buying new hardware. Is cleaning up Windows worth the time and money? For a home user, a DIY clean‑up costs essentially nothing – you just need a few minutes. If you’re paying a technician, a typical call for a quick tidy‑up runs about £40‑£60 in the UK, which is usually cheaper than a full system reinstall. Small businesses often have several PCs with the same symptom. A one‑off service from a local IT provider (including a health check) is roughly £150‑£200, but the downtime saved across the office can easily outweigh that. If you already have a home IT support or business IT support contract, the clean‑up is usually covered. Verdict: DIY is fine for a single PC or occasional slowdown. For multiple machines, or when the drive is constantly at 90 %+, let a professional handle it – the time saved pays for itself. How do I free up disk space in Windows 10/11 quickly? We start with the built‑in tools; they’re fast and safe. Open Settings → System → Storage . Turn on Storage Sense and click Configure Storage Sense or run it now . Choose to delete temporary files older than 30 days and empty the Recycle Bin automatically. Click Run Storage Sense now . In the same window, click Temporary files . Tick Temporary Internet files , Th