I bought a new domain about 3 weeks ago. If I enter mydomain.com it is working but www.mydomain.com isn't and no image or file with www works as well. I even tested it on a proxy but still no hope. At the same time as I bought this domain I bought severall others as well and they are fine. What's wrong?
There may be an issue with your DNS entires at your host. I would contact them with the issue, they are sure to solve it quickly. Good luck