Probably the best way to tackle this is to just start from scratch again. You can download the bin file and add the modules in the install. That will give you your basic setup. From there it sounds like you are using non-ssl connection for testing. (Am I right?)
I have recently found this out, but if you try and navigate to share it will still load. To test a connection more accurately use /alfresco for the extension. If you can't connect then that is the issue.
Now if after you have re-installed everything correctly and your credentials still aren't working. Then it will have to do with the ssl connection. If you search the forums there are many guides and tips on what you can do to configure not only server side, but also your windows client.