Before you install Linux we need to know the exact make and model of your Lenovo laptop.Lenovo laptop, windows10, when I tried to install Ubuntu, download files, then later on,
when I turn on the laptop, the screen black with a blue password box?
how to use USB startup and install Linux?
Thank you, but I cannot enter BIOS, it needed password.Before you install Linux we need to know the exact make and model of your Lenovo laptop.
1. Plug in the usb of Linux with the laptop turned off.
2. Turn the laptop on and enter the BIOS and go to the boot section and make your usb the first choice in the boot menu.
3. Save & Exit the BIOS and the laptop should reboot and take you into the Linux install.
IF your Lenovo laptop is 'new' I'd think that you have UEFI BIOS so you will also need to disable the secure boot too.