I'm just wandering --should i pay the fix fare?

hi,dear.i once get angry as my asus laptop was just bought less than 2 weeks and it doesn't work. luckly, 2 weeks is within my guarantee period and i brought it to the asus specialty store. oh my god! the clerk asked me for 200$ to fix it. while i happened to take off the battery, (my battery is old and the brand is the original A32-N55 battery )and then back to its place.then i tied to open my laptop, it works! i thought it had no problem.however, the clerk said my laptop needed to mend for some other problem amd should pay him 200$.was i cheated by him?