Warning: the following troubleshooting guide is presented in a series of increasingly absurd steps, as is traditional in the field of Pixelated Pandemonium bug catching.
Step 1: Check for obvious solutions
Make sure you have turned off your computer. Like, literally turned it off. Just press the button.
Move on to Step 2 for when that doesn't work
Step 2: Consult the ancient tomes of knowledge
Consult the dusty, leather-bound tomes in the corner of your room. They're probably just as useful as Google, right?
Move on to Step 3 for when that still doesn't work
Step 3: Call in the experts
Call your aunt's cousin's husband, Bob. He's a real whiz with pixels. Just don't expect him to actually help you.
Read the conclusion for when all else fails