Its possible you can't login because you've never created a password at all. HosPortal does not user passwords for your hospital network. Check you've done these things:
Have you registered and chosen a password?
To use HosPortal you must first receive an invitation by email. It looks like this:
This email includes a link to choose a password and be logged in. If you've never chosen a password, you can never login. If you haven't received an invitation, you need to talk to an administrator at your hospital.