Lenovo laptops can come with pre-installed operating systems such as Windows or Linux. If you want to install a different operating system or re-install the current one, you can do so by creating a bootable USB drive or DVD. Insert the bootable media into the laptop and restart it. Press the appropriate key (usually F12 or F2) to access the boot menu and select the bootable device. Make sure to backup your important data before proceeding with the installation. To ensure a smooth and efficient installation of the operating system on your Lenovo laptop, we recommend seeking assistance from our professional customer support team. Our dedicated experts are well-equipped to address any concerns you may have regarding your laptop's performance.