Hello! I see that you are looking for a tutorial on how to revert your laptop back to Windows 8 after upgrading to Windows 10. If your laptop is experiencing lag after the upgrade and you are unable to use the recovery options, you may need to perform a clean installation of Windows 8.
Here are the general steps to perform a clean installation of Windows 8 on your laptop:
1. Backup Your Data: Before proceeding with the installation, make sure to back up all your important files and data to an external drive or cloud storage.
2. Download Windows 8 Installation Media: You will need a Windows 8 installation media to proceed. You can create a bootable USB drive or burn a DVD with the Windows 8 installation files.
3. Boot from Installation Media: Insert the Windows 8 installation media into your laptop and restart it. Enter the BIOS settings (usually by pressing a specific key during startup like F2, F12, Del) and set the boot priority to boot from the installation media.
4. Install Windows 8: Follow the on-screen instructions to install Windows 8 on your laptop. During the installation process, you will be prompted to format the existing partitions on your hard drive. Make sure to back up any important data before formatting.
5. Complete Installation: Once the installation is complete, follow the setup process to configure Windows 8 on your laptop. Make sure to install any necessary drivers for your hardware components.
If you are unsure about any of these steps or encounter any issues during the installation process, feel free to ask for further assistance. It's always a good idea to consult a professional if you are not comfortable performing these steps on your own.