System Reboot disaster

HELP!
Very new to Linux, as in I’ve watched ‘Your Introduction to FOSS and Linux’ package and have followed video 4 to do a hard drive install.
Every seemed to be going well until I removed Installation Media and pressed Enter.
From there I got a blue window with (from memory 4 options) which I hit Continue Reboot (again from memory).
Now my computer - a Lenovo Idea Pad 1 - appears to be cycling through an on-off process.
I can glimpse ‘Reset System’ in the top left corner briefly.
When I hit the Esc button, I get the following screen.
Any help appreciated!

I looked up your Lenovo Idea Pad 1 and here’s how I would begin. Per this video: https://www.youtube.com/watch?v=JKGOj8SMjv8

I don’t have access to a system like yours, but the basic idea is to ensure that the system can see your boot disk, and subsequently use it.

If your USB stick is plugged in, remove it.

Power the laptop off, if it’s not already there. Holding the power button down for 5-10 seconds should do the trick. Power the laptop up and use your finger like a pogo stick on the F2 key, this will bring you into the BIOS (Basic Input Ouput System) of the system. Use the right arrow key and move to the Boot menu.

In Boot Priority Order ensure that your hard disk is at the top of the list. I can’t tell you exactly how to do that, but it should become obvious as you poke around. It may be named similar to the distribution of Linux you installed.

If you can, take a picture of what’s in the Boot menu & share it here. Once your hard disk is set as boot priority 1, use the up arrow key to get to the list it menu items across the top, right arrow to Exit and select it with the enter key. It SHOULD ask if you want to save and exit or just exit, you want to save the change ( if any ) you made.

Do you know how much virtual memory you computer has? And which district you trying to install?