Verifying a SHA Checksum on Windows 10

I found this Youtube video by RickMakes @Rickmakes demonstrating in clear and strait forward terms how to use Windows PowerShell (you type PowerShell in the run box or search box) to do the checksum (checking a file is legit and not tampered with) on Windows 10. Check it out here: https://www.youtube.com/watch?v=6Xpmku3kwjo Apart from checking you don't have a file altered by some third party, verifying the Checksum also helps avoid corrupted files.

He also has a demonstration on how to verify a SHA Checksum on Linux Ubuntu 20.04LTS: https://www.youtube.com/watch?v=RGToWzY-ucE 
and Verifying a SHA Checksum on a Mac: https://www.youtube.com/watch?v=Dyl4pC9OUzQ 

So keep in mind that the PowerShell is different from the Command Prompt. So for instance, in the Windows video he demonstrates using "Get-FileHash" in PowerShell, but "Get-FileHash" is not recognized as an internal or external command in Command Prompt.

There are several methods to open PowerShell in Windows, but the easiest is Click the Start button, type "PowerShell" in the search bar, and then select "Windows PowerShell" from the results.

To open the Run box in Windows 10, press Windows key + R, or right-click the Start button and select Run from the menu. Once the Run dialog box appears, you can type commands to open programs, files, or websites, or use Ctrl + Shift + Enter to run them with administrator privileges.

To open the Command Prompt, press the Windows key + R, type cmd, and press Enter. Alternatively, click the Start button, type cmd in the search bar, and select Command Prompt from the results. For administrative access, type cmd and press Ctrl + Shift + Enter. 

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