Solution : https://service.sap.com/sap/support/notes/929580 (SAP Service marketplace login required)
Key words : 
expected portal content, portal navigation, terms portal, portal role, portal installed, symptom login, system results, blank page, prerequisites system, nw2004s sps7
Related Notes : 
       
| 913972 | Add. info. on upgrading to SAP NW 7.0 SR1 Java |