How can I fix VirtualMachine Error on Parallels Desktop

Hello. I want to buy parallels desktop but I have a problem. Most of games don't run on Parallels Desktop. I get an error:
"This Application Cannot Be Run Under A Virtual Machine Error"
How can I fix this error? I watched lots of youtube videos however, none of them worked. On lots of videos they change SystemVideoBiosVersion on registry but on my machine there are no option like this.

Thank you.