Hi JohnHolt1,
I am Matt, an Independent Advisor and a specialist technician. I would like to assist you with this and hopefully I can help you to resolve this issue promptly.
To find your pc name open command prompt (Press windows + R to open run dialog, type "CMD" and press enter)
In command prompt type "hostname" and press enter. This will give your computer name.
To find your username in command prompt type "WhoAmI" and press enter.
For local accounts when logging in remotely from your android device you may need to try some of the following combinations.
Username and password
COMPUTERNAME\Username and password
If you sign into your computer with a microsoft account the username could be the email address.
I really hope this helps, let me know if I can be of more assistance. Have a great day.
Kind Regards,