@johnson malik Check the order number where you bought it. For example, if you buy it from Amazon, it will have Amazon's order number.
@johnson malik Can you provide your order number
Just select the hard drive you need to install (note that this operation will format the hard drive you selected) after the installation is complete, restart to enter ChromeOSenjoy！
Open chrome_os_installer as shown in the figure to start the installation (this step requires networking)
Open the ChromeOS folder as shown
Power on and press F7 to boot the USB to enter Ubantu and install ChromeOS
Press “del” to enter “BIOS” when starting up windows. Turn off “Secure Boot” and press “F4” to save the setting