This is strange. I installed Xen and tried to install win2012 in a VM, it crashed, I rebooted to see if this would help and now no desktop. The machine boots from the hard drive and I get the grub menu amd have tried the various options but I get dumped to a root prompt and it prompts for the root password. How do I recover the desktop? I can see all my desktop files and such. How do I start the KDE environment?