Terribly wrong, he realised, extricating himself from his tangle of repair work, and sprinting up the corridors towards the console room. Still, he couldn't entirely prepare himself for the sight that awaited him when he burst through the interior doors and found an equally startled-looking Martha at the console.
"You! What did you touch?" the Doctor demanded swiftly, jabbing his sonic screwdriver at her.
Martha put her hands up, struggling to take in the now-much-smaller dimensions of the console room, with its clinical white walls and large, faintly luminous arrangement of roundels. On one wall was a huge viewing screen. "I don't know! What just happened?"
The Doctor was beside her at the console in seconds. He grabbed the back of her shirt and pulled her out of reach of the console, which was now cast in a silvery grey with black panels on the base, and very clearly hexagonal in shape. Across the console, he spotted the outer door mechanism, complete with its ludicrous red knob. He looked over the computer screen and the arrangement of buttons with deep suprise before turning back to Martha.
"No, seriously, what did you do, Martha?"
"Nothing!" she insisted shrilly, "I was surfing the internet and had to clean out a few bugs."
The Doctor felt stirrings of dismay. "Bugs?"
"You know, a few programs were acting a bit wonky, so I just figured I..." she trailed off, eyes wide, and clamped a hand over her mouth.
"You what?" the Doctor snapped impatiently.
Martha's face crumpled in dismay. "...performed a system restore."
The Doctor could only gape at her.
Martha responded angrily, "Well, it's your fault you haven't updated the settings!"