Debugging is like trying to find a needle in a haystack, but the haystack is on fire, the needle is a cat, and you're wearing a tin foil hat.
Step 1: Turn it off and on again. No, seriously, that's the best troubleshooting tip in this chapter.
Step 2: Check the power cord. Is it plugged into the wall? Is it plugged into the toaster? Is it plugged into the cat's tail?
Step 3: Read the manual. If you can find one.