need help installing teradata express

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need help installing teradata express

Hello All
During my installation of Bynet driver v13, I am endlessly prompted to reboot host and continue installation.
After I do it - it does the same thing.

I tried to unnstall it and install v12. Now v.12 bynet installation complains that there is a different version of the same software installed and asks uninstall it.
No items are created in Add/Remove Programs of Control Pane.
I was running script removettu130.bat - did not help.
Can you please help.