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

YouTube Theatre view by default without extensions

Go to
Open dev tools of the browser you are using (Press F12 or Right-click -> Inspect)
Select Console tab
Paste below code and Enter:

document.cookie = 'wide=1; expires='+new Date('3099').toUTCString()+'; path=/';