While that is a generalized question it would help to know the make and model of your laptop
 
You have ELI5 in your topic header - https://eli5.readthedocs.io/en/latest/
 
How does that pertain to your question?

Okie so here is how i explain this to someone with zero computing knowledge or experience:
 
Think of your computer like a human body.
The processor is your brain, it tells your body what to do.
The hard drive is your long term memory, essential memories go here like how to talk, eat, walk and breathe
The Memory/Ram is short term memory, basically its like trying to remember what you had to eat for breakfast from 6 years ago.
Its kind of like that with the motherboard being the nervous system and the power supply being the blood