Laptop doesnt connect to wireless

[JamesDlight1234]

My laptop was connecting to my wifi a couple of days ago but now it wont. It says it is connected but wont load anything to do with the internet. I do not know very much about computer software or stuff like that

 

[Bitfury]

When you are connected, are you able to ping your gateway?

 

[Kylie Sherratt]

My question is the same as this, what does ping ur gateway mean??