Affiliate Marketing Secrets

My boyfriend recently bought me one of these laptops, on the box and the little sticky label that is on the corner of the laptop is states it is a dual core. Plus, it says it is a dual core on the websites for this model.
HOWEVER
It is not! My Computer-Smart bro has looked at its “underwear” (the secret bits I wouldn’t know how to find) and it clearly says it is a single core.
Why is this? How can Advent get away with lying and misleading like this? If it were not for my brother, I would not even have known this. Yet my laptop is increasingly slow, and annoying!
Is there a possibility that the “second” core is hidden/deactivated somehow? And if so, how can it be accessed. And even more, how can they market a product as dual core, when it is only working off ONE core, when the vast majority of computer users would not even notice, let alone be able to activate the second one (if that is even possible)
Any help or insight would be muchly appreciated 🙂