Can't connect to BeagleBone Black anymore

I am using a BeagleBone Black Wireless and cannot connect to the device anymore. I was able to initially and was going through some tutorials but then it just stopped working. I am using Windows 7 and I have the drivers installed. When I type in http://192.168.7.2/ in Chrome it does not connect anymore. It also does not connect through Putty SSH anymore either. Could anybody please help me?