As for food functionality it is very comparable to software remote control of a computer. There are 3 key features that stand out:

• It does not rely on the target machine being booted into the OS. This means you can access it even if it crashes or locks up.
• It can “push” the power button on the machine. This requires an accessory that plugs into the motherboard. So you can force a machine off or cold boot a system.
• You can mount a boot ISO. This is like having a bootable flash drive in the target machine so you can install an OS remotely.

Edit: Because this is essentially full access to the machine as if you where physically at it, it should be considered a security risk. Not saying that you need to be scared of it, but you should be aware of the risk and protect it from unauthorized access.

The Bios may have a setting telling it to use the onboarding video first. I would check bios settings for that.

Many times the best way to respond to strong emotions is to just sit with it. Sit and do nothing but experience it. Don’t try to “solve the problem”, don’t shove it down.