Can't connect my accer laptop to the internet

Hi all,
So I brought an accer laptop from a friend and it doesn't want to connect to the internet. I've tried updating, resetting and I gave it to an IT friend who said he couldn't figure it out.
I tried opening the control panel and going to Change adapter settings but it doesn't have a wifi bit. It only shows a Ethernet option.
It randomly connect one day for about an hour but now it just will not even give me the option.