Windows System Maintenance Guide

Optimizing and repairing your Windows system files and clearing temporary junk can resolve common performance issues. Below are the exact steps to check your disk health, fix system files, and safely clear temporary files. [1, 2, 3]

1. Check Disk Health (CHKDSK)

This tool repairs file system errors and bad sectors on your hard drive. [1, 2]

1. Press the Windows Key and type cmd.
2. Right-click Command Prompt and select Run as administrator.
3. Type chkdsk C: /f and press Enter (replace C: with your drive letter if needed).
4. If you are scanning your main Windows drive, the system will state it cannot lock the drive and ask to schedule it for the next restart. Type Y and press Enter.
5. Restart your computer; the scan will run automatically before Windows loads. [1, 2, 3]

2. System File Checker (SFC)

SFC scans and replaces corrupted Windows system files. [1, 2]

1. Open Command Prompt as Administrator using the steps above.
2. Type sfc /scannow and press Enter.
3. Leave the Command Prompt open until the verification hits 100%.
4. Restart your computer when it finishes. [1, 2, 3, 4, 5]

3. Delete Temporary and Prefetch Files

Clearing these folders removes temporary cache to free up space. [1, 2]

1. Press Windows Key + R to open the Run dialog box. [1]
2. %temp% Folder: Type %temp% and press Enter. Press Ctrl + A to highlight all files, then press Delete. Note: Skip any files that Windows says are currently in use. [1, 2]
3. Prefetch Folder: Open the Run box again, type prefetch and press Enter. Select all files and press Delete (you may need to click "Continue" for administrator permission). [1, 2, 3]
4. Empty your Recycle Bin. [1]