Ave a medion laptop md95766 lost sound taking to computer shop he said i would have to fit one two a usb?

Why can i not just fit inside had no help yet from medion.co.uk any one help
Answer
It could be a lose connection or simply a driver issue. a usb soundcard would be your only option if that is problem. soundcards do fail on laptops though, i worked for a company a few years back who used twinhead laptops and half of the soundcards failed on them.