laptops
Laptop not turning on: charger, battery or board?
A dark laptop is a sequence of tests, not a single part you can guess from a photo.
Check the charger LED if it has one. Try a known-good lead. Listen for a fan twitch. Note whether the machine died mid-update or after a drop.
Bring the charger
A laptop without its brick is a slower diagnosis. Barrel and USB-C power adapters are not interchangeable even when the plug looks similar.
Clicking drives
If the machine makes a rhythmic click, stop power-cycling it and tell us you care about the files. That changes the first step.