How to Fix a Slow Computer

A slow computer disrupts productivity and creates frustration with simple tasks. Computer performance degrades over time due to accumulated files, outdated software, and resource-heavy background processes that consume memory and processing power.

1. Restart your computer. Click the Start menu and select Power > Restart on Windows, or click Apple menu > Restart on Mac. This clears temporary files from memory and stops background processes that may be consuming resources. Wait for the complete restart cycle before opening any applications.
2. Check available storage space. Open File Explorer and click This PC on Windows to view drive capacity, or click Apple menu > About This Mac > Storage on Mac. Free up space if your primary drive shows less than 15% available storage. Delete unnecessary files, empty the Recycle Bin or Trash, and uninstall unused programs through Settings > Apps on Windows or Applications folder on Mac.
3. Disable unnecessary startup programs. Press Ctrl+Shift+Esc to open Task Manager on Windows, click the Startup tab, and disable high-impact programs you don't need immediately at boot. On Mac, go to System Preferences > Users & Groups > Login Items and remove unnecessary applications. Focus on programs with 'High' startup impact ratings.
4. Run disk cleanup and defragmentation. Type 'Disk Cleanup' in Windows search and run it for your primary drive, selecting all file categories to delete. For traditional hard drives, type 'Defragment' in search and run Optimize Drives monthly. Mac users should run First Aid in Disk Utility (Applications > Utilities) to check and repair disk errors.
5. Update your operating system and drivers. Open Windows Update through Settings > Update & Security and install all available updates. On Mac, go to System Preferences > Software Update. Download and install graphics, network, and chipset drivers from your computer manufacturer's website for optimal hardware performance.
6. Scan for malware and viruses. Run a full system scan using Windows Defender (Windows Security > Virus & threat protection > Quick scan > Scan options > Full scan) or your installed antivirus software. On Mac, use Malwarebytes or similar anti-malware tools since macOS has limited built-in malware protection. Remove any detected threats immediately.
7. Check system resource usage. Open Task Manager with Ctrl+Shift+Esc on Windows or Activity Monitor through Applications > Utilities on Mac. Identify processes consuming high CPU, memory, or disk usage. End unnecessary high-resource processes and uninstall applications that consistently use excessive system resources even when not actively used.