The driver is inactive or not installed properly. Please re-install DVD43

Hello experts
Without hitch, I have been running DVD43 for more than a year.
However just I changed my Hard Disc and I am re-installing every program such as, the new version of DVD43 but now I get the following error message:
"The driver is inactive or not installed properly. Please re-install DVD43 to enable the driver."
I find a small gray DVD43 sign on the bottom right of my display and it means the driver is not installed or DVD reader is not found.
Then I am Un-installing and re-installing it but same things. I need your suggestion. Please help.
Thanks.
