I had a cupple of days problems to start my j2ee server.
First, it didn't work because the SAP-users did not have the rights, to logon as a service.
After resolve this problem, the j2ee could not start. It was haning on status "synchronizing binaries" or it switched back to "stopped".
this morning, we saw, that the "XServer" service was "disabled" in the windows-services...
so we switched it to "automaticaly", and now it works =)