Totally fine — you’re not alone, WinDirStat can look intimidating. I’ll keep this simple and give you two practical, easy choices: a very easy “guided” path using a Microsoft‑Store app (minimal fuss) and a slightly more thorough but still easy “built‑in” path (safer, no third‑party). I’ll also point out the few cleanup options you should avoid. Pick which you want and I’ll walk you step‑by‑step.
Short summary / which to pick
- If you want the absolutely easiest, click‑and‑review approach: try Microsoft PC Manager (Store). It gives a guided scan, large‑file finder and one‑click cleanup. Just review the items it will remove and don’t run any “deep” or registry options without checking.
- If you want the safest quick route without installing third‑party software: use Windows’ built‑in Disk Cleanup (run as Administrator) and Storage → Cleanup recommendations. That removes Windows update leftovers, Windows.old and common caches without surprises.
Option A — Easy (Microsoft Store app: PC Manager or Cleaner One)
- Install Microsoft PC Manager (or Cleaner One if you prefer the other Store app). PC Manager is user‑friendly and integrates disk analysis, a large‑file finder and junk cleanup in one UI.
- Open the app → Run the Scan / Analyze function (don’t press any “Auto‑clean” until you review results). The app will show categories (system junk, browser cache, large files).
- Review the items shown — uncheck anything you don’t recognise (especially browser cookies, saved sessions, or app settings). Important: do NOT enable registry cleaning or any “deep slim” option unless you made a full backup.
- For large files the app will show full paths — if anything looks like a VM disk (.vhdx/ext4.vhdx) or Windows.edb and you’re unsure, move it to an external drive rather than delete immediately.
- Run the cleanup. Reboot and check free space. If you want, run the app again to confirm what changed.
Why this is easy: one UI shows what will be removed and you only need to uncheck a few items. Why still be careful: some cleaners can remove browser data or other things you might want to keep, and registry cleaners give little benefit and some risk.
Option B — Built‑in and safest (no extra apps)
This uses Windows tools only — 5 quick clicks / commands:
1) Disk Cleanup (safe, supported)
- Start → type Disk Cleanup → right‑click → Run as administrator → choose C: → click “Clean up system files” → check:
- Windows Update Cleanup
- Previous Windows installation(s) (if present)
- Temporary files, etc.
- Click OK → Delete files. This removes common large leftovers safely.
2) Storage → Cleanup recommendations (visual)
- Settings → System → Storage → “Cleanup recommendations” → follow the guided removals (you can preview each item).
3) Turn off hibernation (if you don’t use it)
- Open an elevated Command Prompt and run:
powercfg /hibernate off
This frees hiberfil.sys equal to your RAM size. (Optional.
4) Empty Recycling Bin and check other drives’ recycle bins:
- Right‑click Recycle Bin → Empty Recycle Bin. Check other drives’ recycle bins too.
5) Check again and reboot. If space still missing, I’ll walk you through the next small diagnostic (vssadmin list shadowstorage and a short largest‑files list) — easy copy/paste I’ll provide.
Why this is safe: it uses Microsoft‑supported cleanup paths and avoids aggressive third‑party “one‑click” modes.
Things to avoid (so you don’t break anything)
- Don’t run registry cleaners unless you have a full system image or are comfortable restoring from backups. They rarely help performance and can break things.
- Don’t delete stuff from C:\Windows manually (use Disk Cleanup, DISM, or PatchCleaner for installer files).
If you’d like I can:
- Walk you step‑by‑step through Option A (I’ll list exactly which checkboxes to uncheck in PC Manager), or
- Paste three tiny copy/paste commands for Option B (Disk Cleanup + powercfg + a short file‑list PS command) and explain the outputs in plain language, or
- Do the minimal diagnostics for you (I can interpret the results if you paste the Disk Cleanup / vssadmin output or the top 20 largest files from PowerShell).
Which do you want to try now? Reply with:
- “A — PC Manager step‑by‑step” or
- “B — Built‑in steps and the three commands” or
- “I want you to interpret outputs” (I’ll tell you exactly what to copy/paste and paste results back here).