I think it is on the bottom of the computer. It may be legible.
You cannot just put the hard disk on just any old other computer if its OS is 64-bit. Some of the people responding to you here are not giving you proper and useful advice.
And actually, it is really not the smartest to ask for computer advice on a site for which that is not the prime purpose. Lots of times, "free" advice from a wannabe is not free. It camn be very expensive--to you, that is, not them.
What you need is a local shop or experienced echnician who charges for his expertise, and whose business depends on it. Not FR, where even a real repairman cannot see your machine and open it up.
Take a Pic with a Smartphone that’s a good clean pic. Then just expand it.