Facebook not opening?

ZTE>TP Link wireless>3 PCs and 1 laptop

facebook.com opens on all but one computer. when i connect internet directly to it through modem, it works, but through the router it doesnt. every other website opens on it but this one doesnt. this isnt a problem with the other computers connected. what is causing this?

Have you tried opening it from more than one browser in your computer? weird problem

yes i did and it still isnt working. i dont even know where to begin as its just a bizarre problem

try using a proxy website and open it from there !

ok. know any popular ones?

Try this:

http://www.proxywebsite.org/

tried it, didnt work. tried connecting the computer directly to the modem, and it worked!!

I hope you have checked hosts file and also if you have not blocked it by personal firewall, if one is installed one.