Each license to our software only works on one computer. If you contact our friendly support team they can offer you a discount on an additional license.
You can contact them here: http://www.reviversoft.com/support/contact/
I kept getting the blue screen with Driver Power State Failure error message and then my computer would restart. I found your product and it did not happen any more. I just purchased an anti-virus (kaspersky) and now it is doing it again. It is so frustrating. My computer is only 6 months old. It is a Asus desktop.