Ubuntu-mate 20.04.3 installed on the laptop easily alongside with windows 10(preinstalled) but after reboot, it shows nothing or it shows just Legion loading screen. After a search I found this which was helpful but needs more details and it could be done for other Linux distributions too.
Turn off the computer. Start it again and press F2 or delete key before it shows anything. Then you will be in BIOS.
Change your "Graphic Device" (on the bottom right corner of the screen above "More Settings") change mode from "Dynamic Graphics" to "Discrete Graphic".
Then save the changes by clicking on "Exit" and save. Then Linux may work fine but if you need to use the power of your graphic card you need to follow other steps.
Reboot to Windows to find out about the details of your graphic card installed on the computer.
Come back to Linux and after opening a web browser go to Nvidia website and Click of "Drivers".
Download the proper driver for your laptop.
reboot the computer and in the dark screen which you can choose between Linux and Windows, choose "Advanced options for Ubuntu" which is mostly comes after the first option on the screen.
In the new screen choose the first option that have "(recovery mode)" at the end which is mostly comes after the first option on the screen.
In the new more colorful screen select "root Drop to root shell prompt"
A command prompt appears after pressing the 'Enter' (or return) key again.
Go to the folder that you downloaded the driver program by mostly using the command like this "cd /home/username/Downloads/" which you should replace "user-name" by your linux username.
Change the mode of program by using command like "chmod a+x NVIDIA-Linux-x86_64-470-94.run"
Run the driver program by mostly using the command like this "./NVIDIA-Linux-x86_64-470-94.run"
Follow the instructions and options which is provided for you and based on your graphic card and your experience choose the best which is not always the preselected one.
Hope it helps