What's the exact model number? If you go to the support page for that machine and download the Owner's Manual (or whatever they call it) it should note whether media keys/smart keys are enabled by default or not.
I don't know exactly when, or on which model(s), this feature made its debut. You could definitely get your parents to do the BIOS tweak if it is present and enabled.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
Explanations exist; they have existed for all time; there is always a well-known solution to every human problem — neat, plausible, and wrong.
~ H.L. Mencken, AKA The Sage of Baltimore