Person: You're good with computers right?
Me: Yes.
P: My computer won't boot after I unplugged it while trying to move it, how do I fix it?
M: I don't know
P: I thought you were good with computers
M: I am. Can't troubleshoot a computer with that little of info.
P: If I bring it to you will you fix it for me?
M: No.
P: What if burritos are involved?
M: I would consider it

This. This is how conversations should go when somebody asks us to fix their computer.