Virtual Box error, what's the problem?

Question

virtual box

Hello everyone, please help, who understands the subject of Virtual Box.
I install the system in a virtual machine, and everything is fine (The system is installed)
But when the system starts (Through Ubuntu), it gives a critical error, I tried to install the system on another disk, it did not help.
What is the problem?

Answer 1

it also says what and what to provide