So I was just going to play a rsps (sites: www.innovativex.org and www.validus718.com) and I get this: http://puu.sh/4cv2s.png and I don't really know how to fix it.

I've tried:
Flushing my DNS
Releasing and Renewing my IP
Restarting my router and waiting 30 seconds ( I have a dynamic ip )
Deleting Cache
Deleting Cookies

Please help me

These sites don't exist anymore.

Yep 404 means it's a non existing or outdated site