Certain changes to your computer hardware or Windows operating system can affect your license status.
Here are some references:
http://www.reviversoft.com/registry-reviver/support/?c=6&a=54
http://www.reviversoft.com/discussions/viewtopic.php?f=13&t=121
However, sending a quick email to our dedicated support team can help you get back on track.
You can either write to support@reviversoft.com or fill up and submit the support form below:
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.