Website down! Need help.

Hello guys,

I started with creating my own website on wordpress. I’ve been helping someone with making joomla websites before and so far it was going great.

Today i wanted to work on my site. When i entered the url, it was telling me that i put in the wrong domain name. I also have no acces anymore to my admin page. I installed wordpress by using the “Quickinstall” and my hosting company is called Hostgator.

Does anyone have ideas on how i can fix this problem or atleast tell me where it could be comming from?

Thanks! (excuses for the bad english)