Yes, a laptop can charge while turned off if its charging hardware stays powered when the system is in a shutdown state.

Yes, a laptop can charge when shut down if its charging controller stays powered and the charger is connected.

Yes, a laptop can start a fire if a battery or charger fails; heat buildup, physical damage, and blocked vents raise the risk.

Yes, a laptop can charge a phone via USB, but speed depends on the port, cable, and whether the laptop is awake.

Yes, a laptop can share its internet as a WiFi hotspot, as long as it has a working WiFi adapter and a connection to share.

Yes, a laptop can overheat on bedding and, in rare cases, start a fire; a hard surface and clear vents cut that risk.

Yes, an overheating laptop can ignite in rare cases, often from battery failure or blocked vents—shut it down and let it cool.

Yes, a laptop can catch fire, often from a failing lithium-ion battery, overheating, or a damaged charger.

Yes, a laptop can cast to a smart TV through Wi-Fi screen sharing or a simple HDMI connection, based on what your devices allow.

Yes, a laptop case can be replaced by swapping the damaged shell pieces, as long as matching parts exist for your exact model.