The internet is full of tune-up advice that sells you software you don't need. Here's what actually works, in order of impact.

1. Disable startup programs (2 minutes)

Open Task Manager → Startup tab. Disable everything you don't need launching on boot. Common offenders: Spotify, Teams, Discord, OneDrive (if you're not using it), manufacturer bloatware. This has the highest impact on boot time and login speed of anything on this list.

2. Check for Windows Update (1 minute)

Go to Settings → Windows Update. Install pending updates. Restart if needed. Many performance complaints resolve after an update that included driver fixes or OS optimizations.

3. Clear temporary files (2 minutes)

Press Win+R, type %temp%, and delete everything you can. Don't worry about files that won't delete — skip them. Then run Disk Cleanup from the Start menu and check the boxes for everything including system files.

4. Check storage space (1 minute)

If your drive is over 85% full, performance degrades. Open File Explorer, right-click your C drive, and check the capacity. If you're running tight, Windows Settings → Storage → Storage Sense can help identify what to remove.

5. Restart (instead of sleep) (0 minutes)

Most people hibernate or sleep their PC for weeks. A proper restart clears memory, applies updates, and resets processes that accumulate cruft over time. Do it once a week.