Sorry I'm confused about your description of the problem, and the details in the link you provided.
I know little about Blu-ray drives but if you can tell more so that others who read this have a better picture, it might save some time and confusion.
The PC, what make and model?
What is the exact wording of the error message you are seeing?
Have you used this Blu-ray drive before to watch BD movies?
Have you used that Blu-ray drive for anything else before? It can act as a normal CD/DVD drive and not exclusive to BD disks. (I see you just inserted it, so probably my question is irrelevant).
When you inserted, (connected), the drive, was it recognised by Windows?
The page you linked to seems to be about a particular problem. The error message there doesn't match as it was telling the user that "There is no disc in the disc drive or your disc drive does not support the format of the inserted disc".
The cause there, and one I haven't heard of myself either, was that the user had previously "Mounted an ISO" using special software called Deamon Tools Lite. An ISO is like a Windows Setup disk you use to install Windows. The ISO is one file, but it contains all the individual files and folders needed to install Windows.
Mounting an ISO image simply means creating a virtual CD/DVD ROM drive that Windows can access just like a physical CD/DVD drive. When required, you could use that drive like you would use the disk, without requiring the actual disk.
So an ISO drive doesn't exist, it is 'virtual', but Windows treats it as a real CD/DVD drive so the contents can be read as if it was a CD or DVD drive.
I don't believe that applies to you at all unless you have done similar yourself.
What I wonder is this. Your PowerDVD software. Is that message telling you that this version of PowerDVD cannot read Blu-ray disks, and so you need to "Upgrade" to a newer version of PowerDVD?
That's why the full error message is important.
Where did you get that patch from?