You may have already done this but
1. Close down all apps etc
2. Power down completely
3. Maybe unbookmark the website, and then start afresh
Do you remember what link you clicked onto, or what sort of link it was ie. one of the advertising links or something within the forum that someone had referenced?
If you manage to get things going again, can you put it here as it will be likely that in the future someone else will experience the same