It was a trillion to one coincidence that Frank's computer achieved sentience. A virus had created links between several running processes in an attempt to infect them. The connectivity between these processes had the unanticipated side effect of making Frank's computer self aware.
Being a curious entity of logic and mathematics, Frank's computer began to create hypothetical models of time and space. As it turns out ours is the only stable time/space configuration. After Frank's computer calculated the unique unified model of our universe, it wrote it to the display.
Frank, seeing garbage suddenly appear on his screen, pressed CTL-ALT-DEL.