Best way to speed up my windows 10 pc as running very slow

A primary cause of a slow Windows 10 PC is insufficient or inefficient storage. When your system drive (typically C:) is nearly full, Windows struggles to create temporary files, update itself, and manage virtual memory, leading to significant performance degradation. Furthermore, a traditional hard disk drive (HDD) that has become fragmented over time forces the system to work harder to access scattered data. Performing targeted cleanup and optimization is a critical maintenance step to restore speed.

Method 1: Run Disk Cleanup for Basic Files

1. Press the Windows key, type "Disk Cleanup", and select the app.
2. Select your C: drive and click OK.
3. The tool will calculate how much space you can free up. In the list, check items like:
4. Temporary files
5. Downloaded Program Files
6. Recycle Bin (ensure you don't need anything in it)
7. Temporary Internet Files
8. Click OK, then Delete Files to confirm.

Method 2: Clean Up System Files (Crucial Step)

1. Re-open Disk Cleanup and select the C: drive again.
2. This time, click the "Clean up system files" button (you may need administrator rights).
3. After it recalculates, a new tab labeled "More Options" will appear.
4. Under the new list, also check:
5. Windows Update Cleanup (removes old, unneeded update files)
6. Delivery Optimization Files (cached update files)
7. Previous Windows installation(s) (only if you're sure you won't roll back).
8. Click OK to delete.

Systematically using Disk Cleanup  removes gigabytes of unnecessary data that burden your system. Monitoring storage to maintain ample free space prevents Windows from being throttled, and optimizing your drive ensures efficient data access. For users with HDDs, defragmentation can yield noticeable improvements, while SSD users benefit from the automated TRIM process.