When I tried to operate a TARDIS in a lucid dream to reach a specific planet I had been chasing forever, the computer inside TARDIS was a mess. The map was nonsense and the search function kept finding zero hits.

Computers are a part of many of my dreams. Most of the time I use the camera or google something with my phone. Sometimes I believe to be in a game and use a keyboard that I can't see to perform some action, like opening a menu. In one dream the world was blurry. I imagined pressing escape on a keyboard and a menu opened up. I went to graphics options and changed them to reload the world. It worked and the world was no longer blurry.