Hi! I spent the last two days trying to install kali linux with usb and cd on my lenovo thinkpad s430.
When i try to access to the installation menu it gives me a black-grey screen and nothing happens.
Once i entered the installation menu ( i don't know how, i tried like 20 times) but after restarting the pc it appears me the Boot setups of:
Ubuntu
"The cd reader"
"The hard disk "
Windows boot manager.


I tried to select each one but after pressing enter i get the black-grey screen and it returns to the boot setup.
Can you help me ?
Love from Italy!