At least he got an answer. I've interviewed for juniors in the past and some of them just sit and look at you if you ask a tricky question.
BTW, I've spent some time with our IT guys so I believe the correct answer is;
1. Ctrl/Alt/Delete
2. Switch it off and back on again
3. THEN take it to PC World
While doing this, you should drink copious amounts of coffee and smoke a LOT of cigarettes.
Did I get it right.