Hello, I have some new Dell OptiPlex 9020 computers with windows 8.1 x64 pro. I installed the ZCM agent on one for imaging. It installed fine but upon reboot the screen resolution was messed up. I tried to login and it gets to a black desktop trying to load the NAL window. The clock and taskbar icons are missing and you can't click on the start button. Everything is stuck/locked up. Any ideas out there?