Disk Cleanup and Space Management:

Method 1: Windows Disk Cleanup Tool (Safest)
1. Press Win+R and type: cleanmgr
2. Select the drive to clean (usually C:)
3. Check these items for deletion:
   - Temporary files
   - Recycle Bin
   - System cache
   - Downloaded program files
4. Click OK to delete
5. Restart your computer when done

Method 2: Storage Settings (Modern Approach)
1. Open Settings (Win+I)
2. Go to System → Storage
3. Click on "Temporary files"
4. Select items to delete
5. Click Remove files

Method 3: Manual Cleanup (Advanced Users)
Safe folders to empty:
- C:WindowsTemp (Temporary files)
- C:Users[YourName]AppDataLocalTemp (App cache)
- %TEMP% (Win+R, type this path)

NEVER Delete:
- Program Files folders
- Documents, Pictures, Desktop
- Windows system folders
- AppDataRoaming (user settings)

Method 4: Storage Sense (Automatic Cleanup)
1. Open Settings → System → Storage
2. Turn ON "Storage Sense"
3. Configure how often to automatically clean
4. Choose what types of files to delete

After Cleanup:
1. Restart your computer
2. Check available disk space (right-click drive → Properties)
3. Run antivirus scan if you deleted many files
4. Monitor disk usage over next few days

Target Disk Space:
- Keep at least 10-15% free on C: drive
- If below 10%, your system performance will slow down