I contacted my ISP and we went through some solutions, but none of them worked. When I do a Windows diagnostic, the result comes up as "Local Area Connection" doesn't have valid IP configuration. The technician made me go through some commands in Command Prompt (I don't remember the names) but to no avail. He concluded that there must be an issue with my network driver and we ended the call. With another device I downloaded the latest drivers from the Asus website (I have a Z87-A) and installed them on my machine, but nothing worked.
I use Windows 7 64-bit. Any help is appreciated and thank you very much.