Tell what site and if you have some antivirus suite, etc. Some block web sites.
Had a site that i have bookmarked and been using for long time. All of a sudden it won't load. Tried typing in the site but still doesn't load. I am running windows 10 and firefox. I have the same setup on my laptop and the site loads up fine with no problem. Just won't load on my dell desktop.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic