Unable to stay connected to Wi-Fi

As of this afternoon, I'm unable to maintain a reliable connection to my wi-fi network. It will only remain connected for no more then 1 minute and then disconnect.

What I've done:

- I've reset the router

- Other devices connect to both ethernet and wi-fi

- The laptop will connect via ethernet

Other symptoms: When I connect to the network, it spins for about 1 minute, and then disconnects without warning nor error message. I can re-choose the network in the "network name" and then the issue repeats. I've deleted the network and re-added it with a valid network key. When I've re-added, it take roughly a minute to connect, then drops off the network within a minute. Sometimes, it just won't connect due to connection timeout.

The only recent changes I've made to the computer is a software update yesterday, but everything worked fine after that.

Product:

MacBook Pro, 15-inch, Mid 2010.

Core i5.

OS X 10.9.5 (13F1096)