Final answer:
It is recommended for John to take notes and pictures while disassembling his computer to aid him in remembering how to put it back together correctly.
Step-by-step explanation:
As an IT technician, I would recommend John to take notes and pictures while disassembling his computer. This will help him remember how to put the PC back together correctly once he is done.
Learn more about how to remember how to put a computer back together