What should I do if my computer says it has no power?
What should I do if my computer says it has no power? Replace the computer's power cable or AC adapter. On a desktop, this is the power cable that runs between the computer case and the power source. The AC adapter for a tablet or laptop is the cable that you plug into the wall to charge your battery (it usually has a tiny light on it). What does it mean when your computer won't start? If your computer won't start and you see a blue screen flash or remain on the screen, you're experiencing a Blue Screen of Death...