Disk utility repair won’t work

[Fishrrman]

A 2008 iMac is now approaching 18 years old.
The internal drive may run, or it may be "done".

We need to know
- what year is the son's MacBook Pro?
- what version of the OS is running on it?
Write this info down on paper so you won't forget when you post.

Unless you're unable to afford it, it's time to be looking for a replacement Mac.
If not "new", the perhaps "newER".
Apple refurbished can be a good choice.

Have you looked at the m4 Mini ...?

 

[avkills]

You could also look into a iPad Pro. That is what I did with my Mom, since all she needs to do is surf the web and do email and texting (Apple ID linked to phone.)

A M4 mini would also be good. But I like the iPad since Mom can either snap to the keyboard thing and use it like a computer or lounge in the chair and use it iPad style.