Facebook not loading
May be facebook server is down.
Try in different search engine.
Many a times facebook will not load in Google chrome but will run start in Opera or in yahoo search engine.
Also try this solutions :-
Force a full refresh for the site. This can be achieved by pressing CTRL + F5 keys at the same time on your favourite browser Firefox, Chrome, Explorer,
Try other related alternative urls such as fb.com
Clear the temporary cache and cookies on your browser then try loading and see.
Or it can be DNS server related issue.
Change your DNS server to your ISP's suggested DNS, or select for automatically detect it. And then check.It will work.
How to clear cookies:
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems.
Or the other option is try after few hours.Many a times its site maintenance issue.
Thanks.
For more problem keep updated.