Did you change the http port in the Apex? If so, you need to access it by adding the new port at the end of the address you use in your browser, like this:
http://192.168.1.50:nnnn (where nnnn = the port you used)
Otherwise, list all of the current Apex network settings here, and post a screen shot of the router's LAN setup page or the output of 'ipconfig' from your PC.