Newbe here, I need direction--how to solve the prevention of CBS streaming on Windows 7.
Are you using a VPN? If you are not in the US, CBS is probably blocking your access. And if you are in the US and using a VPN, they may just be blocking access to known VPN servers for copyright/legal/political reasons.
If this does not apply, you should try contacting CBS web site support to see what might be happening.