i can't boot the system after i installed

Hello thanks for choosing Dell and welcome to our community:

I’m quite unsure if I read it correct, but I have a hard time understanding how you installed Ubuntu and Kali on an unbootable system.

1. Could you find out if Kalis supports UEFI?
2. Could you find out if Kali only installation can be bootable?

Also please note that Kali isn’t on the list of supported OS.

Respectfully,