"Burn" on upper lip??

No, laptop light or radiation cannot make a burnmark on your lip, and the dye in that energy drink is way too thin to be able to stick on your lip like that. You probably bit the skin on your lip or agitated it with your teeth without knowing. Something in the energy drink may have giving you a minor rash, cuzz you might be allergic to something in it. You might just have chapped lips. Just put on some chapstick and moisturize your lips, dont poke at it, and see if it gets less red after you sleep.