What are the differences between your laptop and your other system?
What products do you have installed on each system and what is the full version number?
What OS's are you using?
Both are Windows 7, and have the same version of Acrobat Reader on them.
ISO and Adobe have introduced the PDF/Archive format. Reader can open all foams in this method. Check your preferences to see that you desktop is not defaulting to this action. The PDF/A option should be either "Only PDF/A documents" or "Never".
There is no product named "Acrobat Reader".