keyboard KG-0851 where is internet wireless key?

My WIFI is no longer working and I think I disabled it by touching one of the keys on my keyboard, but the model I have does't show a wifi symbol,

I tried presing all thew F keys and none of them work.

I am using an HP all in one 200, running windows 8.1 with a wireless HP keyboard #KG-0851.

Please help.

Thanks