A few days ago I noticed that every time I wake my Mac from sleep it can't connect to my home wifi. When I wake it up I have to reset my router and it connects just fine and stays connected as long as my Mac is awake, but as soon as I close it and open it again it won't connect. More specifically it does say it's connected to my network but there is no internet connection. I figured it was a problem with my network but other devices will have a connection when mine doesn't. Could this be an issue with my hardware? Wireless card?