Getting 404 when trying to run http://localhost/reports

I have a several reports I want to load to the Report Manager I have run the report configuration manager and setup everything. Every time I try to deploy to the I keep getting a 404 http error. I also added several reports fro another machine to this server and I reset the config file but the report cant find the dataset ??

have you successfully deployed your report server? (in vs, from the solution explorer, right click your project and select 'Deploy')