A. I would try another method, like Ventoy [for Windows/Linux] Rufus [Win], dd
[Unix], (Balena) Etcher [Unix], or (Gnome) Disks [Linux]
B. For the case you didn't know I'll mention it's probably not a good idea to connect Windows 7 (<3) to the internet; but, if you knew, you probably know what's you're doing.
OP, CentOS and CentOS Steam are two *very* different beasts, you don't want Stream.
I wouldn't go for CentOS either because you'll have to replace it anyway.
I'm mentioning that because you can download the old CentOS, but like the commenter above me said, you can do Alma or Rocky.
I would go for Debian, but that's a personal preference.