No Get-FileHash? Use CertUtil instead. Built in Windows 7, 10, and 11 Without power tools.

Most are familiar with
Get-FileHash .\Linux.iso

What about an old or restricted windows system that does not have it and you
cannot install programs?

CertUtil is a another pre-installed Windows utility that can be used to
generate hash checksums:

certutil -hashfile .\Linux.iso SHA256

HashAlgorithm choices: MD2 MD4 MD5 SHA1 SHA256 SHA384 SHA512

You can also drop files on the tiny md5sums
Thanks
Thanks