So... Now what? The program that was open was obviously a browser, but it didn't really look like any one Leon knew about -- and, being the nerd he was, he knew about quite a few of them. Regardless, it seemed to be just a browser, nothing really all that interesting. It didn't came to Leon that this could possibly be a way to contact the outside world. Well, he could always come back to this later.

As for the other option on the very bare-bones taskbar -- Wait, wasn't this supposed to be a ridiculously advanced computer? It looked all shiny and moderny with the holograms and thingajingers before. But now it just looked... boring? Nothing like what it was before. Well, maybe the programs themselves would be more interesting? Hopefully?
A first glance on this sbject seemed to point in the opposite direction. Files were generally boring if you didn't know what was what and where to look, and messing around in the settings would be even more pointless. But...
.
.
.
...Oooh, shiny! Shiny, purple and shiny! Because that is totally a good way to decide what to check out on a computer with possibly world-ending properties for all Leon knew. But still, shiny! 
With the problem of deciding what to do resolved, Leon clicked the ominous swirling ball of violetness. Multiple times, because shiny.