I hope it's ok for me to post this here (DietPi is based on Raspbian).
When installing I selected the option to boot directly to the desktop. However, when it boots it just goes to this screen:

But I can't type anything in the command line. If I use ctrl+alt+f1 it does go to the Xorg server screen, however that doesn't seem to respond to commands either?
Anyone know what's going on? I'm a bit of a newb when it comes to Pis and Linux.