For Windows 10:

1. Clean up disk space:
   • Press Win + R, type “cleanmgr,” and hit Enter to open the Disk Cleanup utility.
   • Select the drive you want to clean up and click OK.
   • Check the boxes for the files you want to delete (e.g., temporary files, system files, etc.) and click OK.
2. Uninstall unused programs:
   • Open the Start menu, go to Settings, and select Apps.
   • Review the list of installed programs and uninstall any that you no longer need or use.
3. Disable startup programs:
   • Right-click on the taskbar and select Task Manager.
   • Go to the Startup tab and disable programs that you don’t need to launch at startup.
4. Disable visual effects:
   • Right-click on the Start button and select System.
   • In the System window, click on “Advanced system settings” on the left.
   • In the Performance section, click on the “Settings” button.
   • Choose “Adjust for best performance” or manually disable specific visual effects.
5. Update your operating system and drivers:
   • Open the Start menu, go to Settings, and select Update & Security.
   • Click on Windows Update and check for any available updates.
   • Additionally, update your device drivers by going to the manufacturer’s website or using dedicated driver update software.
6. Optimize power settings:
   • Open the Start menu, go to Settings, and select System.
   • Click on Power & Sleep and choose the High Performance power plan.
7. Run a malware scan:
   • Use a reputable antivirus program to scan your computer for malware and remove any infections.
8. Disable unnecessary background processes:
   • Press Ctrl + Shift + Esc to open the Task Manager.
   • Identify processes that are using a significant amount of CPU or memory and end them if they are unnecessary.
9. Upgrade your hardware:
   • Consider upgrading components like RAM, hard drive to an SSD, or processor if your system is still slow.
10. Perform a clean reinstall (as a last resort):
    • Back up your important files.
    • Create a Windows 10 installation media using the Media Creation Tool from the official Microsoft website.
    • Follow the on-screen instructions to reinstall Windows 10.

For Windows 11

1. Clean up disk space: Follow the same steps as in Windows 10.
2. Uninstall unused programs: Follow the same steps as in Windows 10.
3. Disable startup programs: Follow the same steps as in Windows 10.
4. Disable visual effects: Windows 11 has a simplified interface with fewer visual effects. However, you can further optimize performance by following the same steps as in Windows 10.
5. Update your operating system and drivers: Follow the same steps as in Windows 10.
6. Optimize power settings: Windows 11 has a built-in power plan called “Best performance” that you can select in the Power & sleep settings.
7. Run a malware scan: Follow the same steps as in Windows 10.
8. Disable unnecessary background processes: Follow the same steps as in Windows 10.
9. Upgrade your hardware: Follow the same steps as in Windows 10.
10. Perform a clean reinstall (as a last resort): Back up your important files and use the Windows 11 installation media to reinstall the operating system.