[Users] Black VM Install Console

Hi, My first time to install a VM on ovirt has encountered a problem. I tried to open up a console to continue the install process. But all I got is a blank window and a request to save a file which I did. The window remained blank and I couldn't see any activities. I went to the node itself and tried to see if I could use virsh tool to understand what's going on. But I was asked for a username and password to perform any actions.  Any idea what I should do at this time? David