The output will give you BIOS, CPU and kernel information.
Go to the Manjaro Launcher or press the super key. Search for Terminal, launch the application.
sudo pacman -S dmidecode lshw --noconfirm && sudo dmidecode | grep -A3 'Vendor:' && sudo lshw -C cpu | grep -A3 'product:' && sudo echo -e "\033[1;33mKernel: $(uname -r)\033[0m"