As the first level starts, you can see an elevator in front of you. There is a square panel on its left. Remove it to obtain a crowbar. Use the crowbar to remove the square panel just above the elevator button. This will reveal a puzzle, requiring you to input 5 colors. Now go to the TV and press the knob on the left. 5 colored circles will be visible on the screen. Change the colors of the grey circles, in the panel above the elevator button, to the ones you just saw on the TV screen. The combination will go like this:
Black, Red, Yellow, Orange and Green.
As you do this, the elevator doors will open and you can escape this floor.
